Finding the Fourth Proportional to 112,710.96, 155,540.79 and 64,963.89

Step by Step Solution

1. Step 1: Write the proportion equation
   112,710.96 : 155,540.79 = 64,963.89 : x
2. Step 2: Convert to fraction form
   112,710.96/155,540.79 = 64,963.89/x
3. Step 3: Cross multiply
   112,710.96x = 155,540.79 × 64,963.89
4. Step 4: Simplify right side
   112,710.96x = 10,104,534,772.07
5. Step 5: Solve for x
   x = 10,104,534,772.07/112,710.96
6. Step 6: Final answer
   x = 89,649.98