Finding the Fourth Proportional to 99,736.17, 137,622.27 and 57,294.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,736.17 : 137,622.27 = 57,294.69 : x
2. Step 2: Convert to fraction form
   99,736.17/137,622.27 = 57,294.69/x
3. Step 3: Cross multiply
   99,736.17x = 137,622.27 × 57,294.69
4. Step 4: Simplify right side
   99,736.17x = 7,885,025,296.75
5. Step 5: Solve for x
   x = 7,885,025,296.75/99,736.17
6. Step 6: Final answer
   x = 79,058.83