Finding the Fourth Proportional to 112,571, 155,334.48 and 64,839.86

Step by Step Solution

1. Step 1: Write the proportion equation
   112,571 : 155,334.48 = 64,839.86 : x
2. Step 2: Convert to fraction form
   112,571/155,334.48 = 64,839.86/x
3. Step 3: Cross multiply
   112,571x = 155,334.48 × 64,839.86
4. Step 4: Simplify right side
   112,571x = 10,071,865,936.37
5. Step 5: Solve for x
   x = 10,071,865,936.37/112,571
6. Step 6: Final answer
   x = 89,471.23