Finding the Fourth Proportional to 111,859.93, 154,370.37 and 64,122.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,859.93 : 154,370.37 = 64,122.31 : x
2. Step 2: Convert to fraction form
   111,859.93/154,370.37 = 64,122.31/x
3. Step 3: Cross multiply
   111,859.93x = 154,370.37 × 64,122.31
4. Step 4: Simplify right side
   111,859.93x = 9,898,584,719.95
5. Step 5: Solve for x
   x = 9,898,584,719.95/111,859.93
6. Step 6: Final answer
   x = 88,490.89