Finding the Fourth Proportional to 147,250.76, 220,439.76 and 90,909.72

Step by Step Solution

1. Step 1: Write the proportion equation
   147,250.76 : 220,439.76 = 90,909.72 : x
2. Step 2: Convert to fraction form
   147,250.76/220,439.76 = 90,909.72/x
3. Step 3: Cross multiply
   147,250.76x = 220,439.76 × 90,909.72
4. Step 4: Simplify right side
   147,250.76x = 20,040,116,858.47
5. Step 5: Solve for x
   x = 20,040,116,858.47/147,250.76
6. Step 6: Final answer
   x = 136,095.17