Finding the Fourth Proportional to 99,433.10, 149,090.16 and 67,451.47

Step by Step Solution

1. Step 1: Write the proportion equation
   99,433.10 : 149,090.16 = 67,451.47 : x
2. Step 2: Convert to fraction form
   99,433.10/149,090.16 = 67,451.47/x
3. Step 3: Cross multiply
   99,433.10x = 149,090.16 × 67,451.47
4. Step 4: Simplify right side
   99,433.10x = 10,056,350,117.28
5. Step 5: Solve for x
   x = 10,056,350,117.28/99,433.10
6. Step 6: Final answer
   x = 101,136.85