Finding the Fourth Proportional to 111,612.28, 154,026.18 and 65,682.07

Step by Step Solution

1. Step 1: Write the proportion equation
   111,612.28 : 154,026.18 = 65,682.07 : x
2. Step 2: Convert to fraction form
   111,612.28/154,026.18 = 65,682.07/x
3. Step 3: Cross multiply
   111,612.28x = 154,026.18 × 65,682.07
4. Step 4: Simplify right side
   111,612.28x = 10,116,758,336.59
5. Step 5: Solve for x
   x = 10,116,758,336.59/111,612.28
6. Step 6: Final answer
   x = 90,641.99