Finding the Fourth Proportional to 99,336.15, 137,082.33 and 54,015.03

Step by Step Solution

1. Step 1: Write the proportion equation
   99,336.15 : 137,082.33 = 54,015.03 : x
2. Step 2: Convert to fraction form
   99,336.15/137,082.33 = 54,015.03/x
3. Step 3: Cross multiply
   99,336.15x = 137,082.33 × 54,015.03
4. Step 4: Simplify right side
   99,336.15x = 7,404,506,167.42
5. Step 5: Solve for x
   x = 7,404,506,167.42/99,336.15
6. Step 6: Final answer
   x = 74,539.89