Finding the Fourth Proportional to 42,288.96, 63,472.32 and 39,748.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,288.96 : 63,472.32 = 39,748.80 : x
2. Step 2: Convert to fraction form
   42,288.96/63,472.32 = 39,748.80/x
3. Step 3: Cross multiply
   42,288.96x = 63,472.32 × 39,748.80
4. Step 4: Simplify right side
   42,288.96x = 2,522,948,553.22
5. Step 5: Solve for x
   x = 2,522,948,553.22/42,288.96
6. Step 6: Final answer
   x = 59,659.74