Finding the Fourth Proportional to 113,846.64, 157,107.78 and 66,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,846.64 : 157,107.78 = 66,111.72 : x
2. Step 2: Convert to fraction form
   113,846.64/157,107.78 = 66,111.72/x
3. Step 3: Cross multiply
   113,846.64x = 157,107.78 × 66,111.72
4. Step 4: Simplify right side
   113,846.64x = 10,386,665,561.18
5. Step 5: Solve for x
   x = 10,386,665,561.18/113,846.64
6. Step 6: Final answer
   x = 91,233.83