Finding the Fourth Proportional to 89,598.79, 123,594.90 and 56,006.47

Step by Step Solution

1. Step 1: Write the proportion equation
   89,598.79 : 123,594.90 = 56,006.47 : x
2. Step 2: Convert to fraction form
   89,598.79/123,594.90 = 56,006.47/x
3. Step 3: Cross multiply
   89,598.79x = 123,594.90 × 56,006.47
4. Step 4: Simplify right side
   89,598.79x = 6,922,114,059.00
5. Step 5: Solve for x
   x = 6,922,114,059.00/89,598.79
6. Step 6: Final answer
   x = 77,256.78