Finding the Fourth Proportional to 112,872.05, 155,783.27 and 85,738.00

Step by Step Solution

1. Step 1: Write the proportion equation
   112,872.05 : 155,783.27 = 85,738.00 : x
2. Step 2: Convert to fraction form
   112,872.05/155,783.27 = 85,738.00/x
3. Step 3: Cross multiply
   112,872.05x = 155,783.27 × 85,738.00
4. Step 4: Simplify right side
   112,872.05x = 13,356,545,828.15
5. Step 5: Solve for x
   x = 13,356,545,828.15/112,872.05
6. Step 6: Final answer
   x = 118,333.51