Finding the Fourth Proportional to 103,665.52, 143,102.56 and 69,693.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,665.52 : 143,102.56 = 69,693.72 : x
2. Step 2: Convert to fraction form
   103,665.52/143,102.56 = 69,693.72/x
3. Step 3: Cross multiply
   103,665.52x = 143,102.56 × 69,693.72
4. Step 4: Simplify right side
   103,665.52x = 9,973,349,747.92
5. Step 5: Solve for x
   x = 9,973,349,747.92/103,665.52
6. Step 6: Final answer
   x = 96,207.01