Finding the Fourth Proportional to 112,463.74, 155,216.86 and 64,707.86

Step by Step Solution

1. Step 1: Write the proportion equation
   112,463.74 : 155,216.86 = 64,707.86 : x
2. Step 2: Convert to fraction form
   112,463.74/155,216.86 = 64,707.86/x
3. Step 3: Cross multiply
   112,463.74x = 155,216.86 × 64,707.86
4. Step 4: Simplify right side
   112,463.74x = 10,043,751,072.79
5. Step 5: Solve for x
   x = 10,043,751,072.79/112,463.74
6. Step 6: Final answer
   x = 89,306.57