Finding the Fourth Proportional to 101,153.67, 139,657.82 and 90,525.03

Step by Step Solution

1. Step 1: Write the proportion equation
   101,153.67 : 139,657.82 = 90,525.03 : x
2. Step 2: Convert to fraction form
   101,153.67/139,657.82 = 90,525.03/x
3. Step 3: Cross multiply
   101,153.67x = 139,657.82 × 90,525.03
4. Step 4: Simplify right side
   101,153.67x = 12,642,527,892.61
5. Step 5: Solve for x
   x = 12,642,527,892.61/101,153.67
6. Step 6: Final answer
   x = 124,983.38