Finding the Fourth Proportional to 99,955.59, 137,940.67 and 54,632.31

Step by Step Solution

1. Step 1: Write the proportion equation
   99,955.59 : 137,940.67 = 54,632.31 : x
2. Step 2: Convert to fraction form
   99,955.59/137,940.67 = 54,632.31/x
3. Step 3: Cross multiply
   99,955.59x = 137,940.67 × 54,632.31
4. Step 4: Simplify right side
   99,955.59x = 7,536,017,445.05
5. Step 5: Solve for x
   x = 7,536,017,445.05/99,955.59
6. Step 6: Final answer
   x = 75,393.66