Finding the Fourth Proportional to 99,756.05, 137,666.67 and 54,436.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,756.05 : 137,666.67 = 54,436.52 : x
2. Step 2: Convert to fraction form
   99,756.05/137,666.67 = 54,436.52/x
3. Step 3: Cross multiply
   99,756.05x = 137,666.67 × 54,436.52
4. Step 4: Simplify right side
   99,756.05x = 7,494,094,434.79
5. Step 5: Solve for x
   x = 7,494,094,434.79/99,756.05
6. Step 6: Final answer
   x = 75,124.21