Finding the Fourth Proportional to 112,764.72, 155,613.24 and 65,020.08

Step by Step Solution

1. Step 1: Write the proportion equation
   112,764.72 : 155,613.24 = 65,020.08 : x
2. Step 2: Convert to fraction form
   112,764.72/155,613.24 = 65,020.08/x
3. Step 3: Cross multiply
   112,764.72x = 155,613.24 × 65,020.08
4. Step 4: Simplify right side
   112,764.72x = 10,117,985,313.86
5. Step 5: Solve for x
   x = 10,117,985,313.86/112,764.72
6. Step 6: Final answer
   x = 89,726.51