Finding the Fourth Proportional to 112,422.86, 155,139.45 and 64,683.62

Step by Step Solution

1. Step 1: Write the proportion equation
   112,422.86 : 155,139.45 = 64,683.62 : x
2. Step 2: Convert to fraction form
   112,422.86/155,139.45 = 64,683.62/x
3. Step 3: Cross multiply
   112,422.86x = 155,139.45 × 64,683.62
4. Step 4: Simplify right side
   112,422.86x = 10,034,981,230.81
5. Step 5: Solve for x
   x = 10,034,981,230.81/112,422.86
6. Step 6: Final answer
   x = 89,261.04