Finding the Fourth Proportional to 112,540.90, 155,289.18 and 64,785.01

Step by Step Solution

1. Step 1: Write the proportion equation
   112,540.90 : 155,289.18 = 64,785.01 : x
2. Step 2: Convert to fraction form
   112,540.90/155,289.18 = 64,785.01/x
3. Step 3: Cross multiply
   112,540.90x = 155,289.18 × 64,785.01
4. Step 4: Simplify right side
   112,540.90x = 10,060,410,755.27
5. Step 5: Solve for x
   x = 10,060,410,755.27/112,540.90
6. Step 6: Final answer
   x = 89,393.38