Finding the Fourth Proportional to 63,931.10, 88,262.71 and 56,837.89

Step by Step Solution

1. Step 1: Write the proportion equation
   63,931.10 : 88,262.71 = 56,837.89 : x
2. Step 2: Convert to fraction form
   63,931.10/88,262.71 = 56,837.89/x
3. Step 3: Cross multiply
   63,931.10x = 88,262.71 × 56,837.89
4. Step 4: Simplify right side
   63,931.10x = 5,016,666,490.03
5. Step 5: Solve for x
   x = 5,016,666,490.03/63,931.10
6. Step 6: Final answer
   x = 78,469.90