Finding the Fourth Proportional to 99,762.81, 137,675.61 and 54,443.73

Step by Step Solution

1. Step 1: Write the proportion equation
   99,762.81 : 137,675.61 = 54,443.73 : x
2. Step 2: Convert to fraction form
   99,762.81/137,675.61 = 54,443.73/x
3. Step 3: Cross multiply
   99,762.81x = 137,675.61 × 54,443.73
4. Step 4: Simplify right side
   99,762.81x = 7,495,573,050.05
5. Step 5: Solve for x
   x = 7,495,573,050.05/99,762.81
6. Step 6: Final answer
   x = 75,133.94