Finding the Fourth Proportional to 99,717.31, 149,543.49 and 33,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,717.31 : 149,543.49 = 33,139.56 : x
2. Step 2: Convert to fraction form
   99,717.31/149,543.49 = 33,139.56/x
3. Step 3: Cross multiply
   99,717.31x = 149,543.49 × 33,139.56
4. Step 4: Simplify right side
   99,717.31x = 4,955,805,459.46
5. Step 5: Solve for x
   x = 4,955,805,459.46/99,717.31
6. Step 6: Final answer
   x = 49,698.55