Finding the Fourth Proportional to 105,043.62, 144,954.40 and 59,715.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,043.62 : 144,954.40 = 59,715.31 : x
2. Step 2: Convert to fraction form
   105,043.62/144,954.40 = 59,715.31/x
3. Step 3: Cross multiply
   105,043.62x = 144,954.40 × 59,715.31
4. Step 4: Simplify right side
   105,043.62x = 8,655,996,931.86
5. Step 5: Solve for x
   x = 8,655,996,931.86/105,043.62
6. Step 6: Final answer
   x = 82,403.83