Finding the Fourth Proportional to 78,141.59, 107,835.28 and 42,331.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.59 : 107,835.28 = 42,331.74 : x
2. Step 2: Convert to fraction form
   78,141.59/107,835.28 = 42,331.74/x
3. Step 3: Cross multiply
   78,141.59x = 107,835.28 × 42,331.74
4. Step 4: Simplify right side
   78,141.59x = 4,564,854,824.13
5. Step 5: Solve for x
   x = 4,564,854,824.13/78,141.59
6. Step 6: Final answer
   x = 58,417.74