Finding the Fourth Proportional to 144,367.28, 216,587.78 and 60,099.42

Step by Step Solution

1. Step 1: Write the proportion equation
   144,367.28 : 216,587.78 = 60,099.42 : x
2. Step 2: Convert to fraction form
   144,367.28/216,587.78 = 60,099.42/x
3. Step 3: Cross multiply
   144,367.28x = 216,587.78 × 60,099.42
4. Step 4: Simplify right side
   144,367.28x = 13,016,799,656.59
5. Step 5: Solve for x
   x = 13,016,799,656.59/144,367.28
6. Step 6: Final answer
   x = 90,164.48