Finding the Fourth Proportional to 99,496.46, 137,300.52 and 54,174.31

Step by Step Solution

1. Step 1: Write the proportion equation
   99,496.46 : 137,300.52 = 54,174.31 : x
2. Step 2: Convert to fraction form
   99,496.46/137,300.52 = 54,174.31/x
3. Step 3: Cross multiply
   99,496.46x = 137,300.52 × 54,174.31
4. Step 4: Simplify right side
   99,496.46x = 7,438,160,933.64
5. Step 5: Solve for x
   x = 7,438,160,933.64/99,496.46
6. Step 6: Final answer
   x = 74,758.05