Finding the Fourth Proportional to 111,834.78, 154,331.91 and 64,085.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111,834.78 : 154,331.91 = 64,085.82 : x
2. Step 2: Convert to fraction form
   111,834.78/154,331.91 = 64,085.82/x
3. Step 3: Cross multiply
   111,834.78x = 154,331.91 × 64,085.82
4. Step 4: Simplify right side
   111,834.78x = 9,890,487,004.52
5. Step 5: Solve for x
   x = 9,890,487,004.52/111,834.78
6. Step 6: Final answer
   x = 88,438.38