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Finding the Fourth Proportional to 91,709.55, 137,564.33 and 79,024.95

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Solution

The fourth proportional to 91,709.55, 137,564.33 and 79,024.95 is: 118,537.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,709.55 : 137,564.33 = 79,024.95 : x
  2. Step 2: Convert to fraction form
    91,709.55/137,564.33 = 79,024.95/x
  3. Step 3: Cross multiply
    91,709.55x = 137,564.33 × 79,024.95
  4. Step 4: Simplify right side
    91,709.55x = 10,871,013,904.91
  5. Step 5: Solve for x
    x = 10,871,013,904.91/91,709.55
  6. Step 6: Final answer
    x = 118,537.43

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