Finding the Fourth Proportional to 64,428.86, 88,891.13 and 38,942.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,428.86 : 88,891.13 = 38,942.76 : x
2. Step 2: Convert to fraction form
   64,428.86/88,891.13 = 38,942.76/x
3. Step 3: Cross multiply
   64,428.86x = 88,891.13 × 38,942.76
4. Step 4: Simplify right side
   64,428.86x = 3,461,665,941.72
5. Step 5: Solve for x
   x = 3,461,665,941.72/64,428.86
6. Step 6: Final answer
   x = 53,728.50