Finding the Fourth Proportional to 99,403.89, 137,175.86 and 54,080.84

Step by Step Solution

1. Step 1: Write the proportion equation
   99,403.89 : 137,175.86 = 54,080.84 : x
2. Step 2: Convert to fraction form
   99,403.89/137,175.86 = 54,080.84/x
3. Step 3: Cross multiply
   99,403.89x = 137,175.86 × 54,080.84
4. Step 4: Simplify right side
   99,403.89x = 7,418,585,828.86
5. Step 5: Solve for x
   x = 7,418,585,828.86/99,403.89
6. Step 6: Final answer
   x = 74,630.74