Finding the Fourth Proportional to 111,912.86, 154,454.51 and 64,157.00

Step by Step Solution

1. Step 1: Write the proportion equation
   111,912.86 : 154,454.51 = 64,157.00 : x
2. Step 2: Convert to fraction form
   111,912.86/154,454.51 = 64,157.00/x
3. Step 3: Cross multiply
   111,912.86x = 154,454.51 × 64,157.00
4. Step 4: Simplify right side
   111,912.86x = 9,909,337,386.19
5. Step 5: Solve for x
   x = 9,909,337,386.19/111,912.86
6. Step 6: Final answer
   x = 88,545.12