Finding the Fourth Proportional to 105,196.96, 145,152.62 and 59,872.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,196.96 : 145,152.62 = 59,872.30 : x
2. Step 2: Convert to fraction form
   105,196.96/145,152.62 = 59,872.30/x
3. Step 3: Cross multiply
   105,196.96x = 145,152.62 × 59,872.30
4. Step 4: Simplify right side
   105,196.96x = 8,690,621,210.43
5. Step 5: Solve for x
   x = 8,690,621,210.43/105,196.96
6. Step 6: Final answer
   x = 82,612.86