Finding the Fourth Proportional to 112,613.59, 155,463.05 and 64,857.74

Step by Step Solution

1. Step 1: Write the proportion equation
   112,613.59 : 155,463.05 = 64,857.74 : x
2. Step 2: Convert to fraction form
   112,613.59/155,463.05 = 64,857.74/x
3. Step 3: Cross multiply
   112,613.59x = 155,463.05 × 64,857.74
4. Step 4: Simplify right side
   112,613.59x = 10,082,981,752.22
5. Step 5: Solve for x
   x = 10,082,981,752.22/112,613.59
6. Step 6: Final answer
   x = 89,536.10