Finding the Fourth Proportional to 78,141.34, 107,834.78 and 42,331.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.34 : 107,834.78 = 42,331.32 : x
2. Step 2: Convert to fraction form
   78,141.34/107,834.78 = 42,331.32/x
3. Step 3: Cross multiply
   78,141.34x = 107,834.78 × 42,331.32
4. Step 4: Simplify right side
   78,141.34x = 4,564,788,579.31
5. Step 5: Solve for x
   x = 4,564,788,579.31/78,141.34
6. Step 6: Final answer
   x = 58,417.08