Finding the Fourth Proportional to 99,890.72, 149,785.92 and 33,307.28

Step by Step Solution

1. Step 1: Write the proportion equation
   99,890.72 : 149,785.92 = 33,307.28 : x
2. Step 2: Convert to fraction form
   99,890.72/149,785.92 = 33,307.28/x
3. Step 3: Cross multiply
   99,890.72x = 149,785.92 × 33,307.28
4. Step 4: Simplify right side
   99,890.72x = 4,988,961,577.50
5. Step 5: Solve for x
   x = 4,988,961,577.50/99,890.72
6. Step 6: Final answer
   x = 49,944.19