Finding the Fourth Proportional to 69,478.92, 95,931 and 42,657.80

Step by Step Solution

1. Step 1: Write the proportion equation
   69,478.92 : 95,931 = 42,657.80 : x
2. Step 2: Convert to fraction form
   69,478.92/95,931 = 42,657.80/x
3. Step 3: Cross multiply
   69,478.92x = 95,931 × 42,657.80
4. Step 4: Simplify right side
   69,478.92x = 4,092,205,411.80
5. Step 5: Solve for x
   x = 4,092,205,411.80/69,478.92
6. Step 6: Final answer
   x = 58,898.52