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Finding the Fourth Proportional to 105,720.88, 158,605.62 and 61,384.72

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Solution

The fourth proportional to 105,720.88, 158,605.62 and 61,384.72 is: 92,091.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,720.88 : 158,605.62 = 61,384.72 : x
  2. Step 2: Convert to fraction form
    105,720.88/158,605.62 = 61,384.72/x
  3. Step 3: Cross multiply
    105,720.88x = 158,605.62 × 61,384.72
  4. Step 4: Simplify right side
    105,720.88x = 9,735,961,574.13
  5. Step 5: Solve for x
    x = 9,735,961,574.13/105,720.88
  6. Step 6: Final answer
    x = 92,091.19

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