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Finding the Fourth Proportional to 78,123.50, 107,810.86 and 42,313.62

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Solution

The fourth proportional to 78,123.50, 107,810.86 and 42,313.62 is: 58,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,123.50 : 107,810.86 = 42,313.62 : x
  2. Step 2: Convert to fraction form
    78,123.50/107,810.86 = 42,313.62/x
  3. Step 3: Cross multiply
    78,123.50x = 107,810.86 × 42,313.62
  4. Step 4: Simplify right side
    78,123.50x = 4,561,867,761.91
  5. Step 5: Solve for x
    x = 4,561,867,761.91/78,123.50
  6. Step 6: Final answer
    x = 58,393.03

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