Finding the Fourth Proportional to 101,152.92, 139,656.78 and 90,524.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,152.92 : 139,656.78 = 90,524.28 : x
2. Step 2: Convert to fraction form
   101,152.92/139,656.78 = 90,524.28/x
3. Step 3: Cross multiply
   101,152.92x = 139,656.78 × 90,524.28
4. Step 4: Simplify right side
   101,152.92x = 12,642,329,456.62
5. Step 5: Solve for x
   x = 12,642,329,456.62/101,152.92
6. Step 6: Final answer
   x = 124,982.35