Finding the Fourth Proportional to 78,141.29, 107,835.47 and 42,331.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.29 : 107,835.47 = 42,331.27 : x
2. Step 2: Convert to fraction form
   78,141.29/107,835.47 = 42,331.27/x
3. Step 3: Cross multiply
   78,141.29x = 107,835.47 × 42,331.27
4. Step 4: Simplify right side
   78,141.29x = 4,564,812,184.49
5. Step 5: Solve for x
   x = 4,564,812,184.49/78,141.29
6. Step 6: Final answer
   x = 58,417.42