Finding the Fourth Proportional to 109,834.87, 151,567.31 and 64,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,834.87 : 151,567.31 = 64,517.50 : x
2. Step 2: Convert to fraction form
   109,834.87/151,567.31 = 64,517.50/x
3. Step 3: Cross multiply
   109,834.87x = 151,567.31 × 64,517.50
4. Step 4: Simplify right side
   109,834.87x = 9,778,743,922.93
5. Step 5: Solve for x
   x = 9,778,743,922.93/109,834.87
6. Step 6: Final answer
   x = 89,031.32