Finding the Fourth Proportional to 107,630.72, 148,446.24 and 69,917.12

Step by Step Solution

1. Step 1: Write the proportion equation
   107,630.72 : 148,446.24 = 69,917.12 : x
2. Step 2: Convert to fraction form
   107,630.72/148,446.24 = 69,917.12/x
3. Step 3: Cross multiply
   107,630.72x = 148,446.24 × 69,917.12
4. Step 4: Simplify right side
   107,630.72x = 10,378,933,575.63
5. Step 5: Solve for x
   x = 10,378,933,575.63/107,630.72
6. Step 6: Final answer
   x = 96,430.96