Finding the Fourth Proportional to 99,368.86, 137,130.78 and 54,047.83

Step by Step Solution

1. Step 1: Write the proportion equation
   99,368.86 : 137,130.78 = 54,047.83 : x
2. Step 2: Convert to fraction form
   99,368.86/137,130.78 = 54,047.83/x
3. Step 3: Cross multiply
   99,368.86x = 137,130.78 × 54,047.83
4. Step 4: Simplify right side
   99,368.86x = 7,411,620,399.55
5. Step 5: Solve for x
   x = 7,411,620,399.55/99,368.86
6. Step 6: Final answer
   x = 74,586.96