Finding the Fourth Proportional to 99,393.55, 137,164.59 and 54,071.62

Step by Step Solution

1. Step 1: Write the proportion equation
   99,393.55 : 137,164.59 = 54,071.62 : x
2. Step 2: Convert to fraction form
   99,393.55/137,164.59 = 54,071.62/x
3. Step 3: Cross multiply
   99,393.55x = 137,164.59 × 54,071.62
4. Step 4: Simplify right side
   99,393.55x = 7,416,711,245.02
5. Step 5: Solve for x
   x = 7,416,711,245.02/99,393.55
6. Step 6: Final answer
   x = 74,619.65