Finding the Fourth Proportional to 99,315.83, 137,058.49 and 53,996.86

Step by Step Solution

1. Step 1: Write the proportion equation
   99,315.83 : 137,058.49 = 53,996.86 : x
2. Step 2: Convert to fraction form
   99,315.83/137,058.49 = 53,996.86/x
3. Step 3: Cross multiply
   99,315.83x = 137,058.49 × 53,996.86
4. Step 4: Simplify right side
   99,315.83x = 7,400,728,096.34
5. Step 5: Solve for x
   x = 7,400,728,096.34/99,315.83
6. Step 6: Final answer
   x = 74,517.10