Finding the Fourth Proportional to 101,024.02, 139,472.88 and 89,815

Step by Step Solution

1. Step 1: Write the proportion equation
   101,024.02 : 139,472.88 = 89,815 : x
2. Step 2: Convert to fraction form
   101,024.02/139,472.88 = 89,815/x
3. Step 3: Cross multiply
   101,024.02x = 139,472.88 × 89,815
4. Step 4: Simplify right side
   101,024.02x = 12,526,756,717.20
5. Step 5: Solve for x
   x = 12,526,756,717.20/101,024.02
6. Step 6: Final answer
   x = 123,997.80