Finding the Fourth Proportional to 99,498.08, 137,308.56 and 54,175.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,498.08 : 137,308.56 = 54,175.88 : x
2. Step 2: Convert to fraction form
   99,498.08/137,308.56 = 54,175.88/x
3. Step 3: Cross multiply
   99,498.08x = 137,308.56 × 54,175.88
4. Step 4: Simplify right side
   99,498.08x = 7,438,812,069.53
5. Step 5: Solve for x
   x = 7,438,812,069.53/99,498.08
6. Step 6: Final answer
   x = 74,763.37