Finding the Fourth Proportional to 99,317.27, 137,060.46 and 53,998.31

Step by Step Solution

1. Step 1: Write the proportion equation
   99,317.27 : 137,060.46 = 53,998.31 : x
2. Step 2: Convert to fraction form
   99,317.27/137,060.46 = 53,998.31/x
3. Step 3: Cross multiply
   99,317.27x = 137,060.46 × 53,998.31
4. Step 4: Simplify right side
   99,317.27x = 7,401,032,522.52
5. Step 5: Solve for x
   x = 7,401,032,522.52/99,317.27
6. Step 6: Final answer
   x = 74,519.09