Finding the Fourth Proportional to 99,477.86, 137,274.98 and 54,154.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,477.86 : 137,274.98 = 54,154.69 : x
2. Step 2: Convert to fraction form
   99,477.86/137,274.98 = 54,154.69/x
3. Step 3: Cross multiply
   99,477.86x = 137,274.98 × 54,154.69
4. Step 4: Simplify right side
   99,477.86x = 7,434,083,372.70
5. Step 5: Solve for x
   x = 7,434,083,372.70/99,477.86
6. Step 6: Final answer
   x = 74,731.03