Finding the Fourth Proportional to 99,406.33, 137,181.28 and 54,086.22

Step by Step Solution

1. Step 1: Write the proportion equation
   99,406.33 : 137,181.28 = 54,086.22 : x
2. Step 2: Convert to fraction form
   99,406.33/137,181.28 = 54,086.22/x
3. Step 3: Cross multiply
   99,406.33x = 137,181.28 × 54,086.22
4. Step 4: Simplify right side
   99,406.33x = 7,419,616,891.42
5. Step 5: Solve for x
   x = 7,419,616,891.42/99,406.33
6. Step 6: Final answer
   x = 74,639.28