Finding the Fourth Proportional to 99,741.72, 149,522.42 and 67,731.47

Step by Step Solution

1. Step 1: Write the proportion equation
   99,741.72 : 149,522.42 = 67,731.47 : x
2. Step 2: Convert to fraction form
   99,741.72/149,522.42 = 67,731.47/x
3. Step 3: Cross multiply
   99,741.72x = 149,522.42 × 67,731.47
4. Step 4: Simplify right side
   99,741.72x = 10,127,373,304.56
5. Step 5: Solve for x
   x = 10,127,373,304.56/99,741.72
6. Step 6: Final answer
   x = 101,535.98