Finding the Fourth Proportional to 78,141.08, 107,834.60 and 42,331.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.08 : 107,834.60 = 42,331.25 : x
2. Step 2: Convert to fraction form
   78,141.08/107,834.60 = 42,331.25/x
3. Step 3: Cross multiply
   78,141.08x = 107,834.60 × 42,331.25
4. Step 4: Simplify right side
   78,141.08x = 4,564,772,660.42
5. Step 5: Solve for x
   x = 4,564,772,660.42/78,141.08
6. Step 6: Final answer
   x = 58,417.07