Finding the Fourth Proportional to 105,411.63, 145,471.49 and 60,088.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,411.63 : 145,471.49 = 60,088.79 : x
2. Step 2: Convert to fraction form
   105,411.63/145,471.49 = 60,088.79/x
3. Step 3: Cross multiply
   105,411.63x = 145,471.49 × 60,088.79
4. Step 4: Simplify right side
   105,411.63x = 8,741,205,621.89
5. Step 5: Solve for x
   x = 8,741,205,621.89/105,411.63
6. Step 6: Final answer
   x = 82,924.49