Finding the Fourth Proportional to 105,594.30, 145,720.62 and 57,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,594.30 : 145,720.62 = 57,847.50 : x
2. Step 2: Convert to fraction form
   105,594.30/145,720.62 = 57,847.50/x
3. Step 3: Cross multiply
   105,594.30x = 145,720.62 × 57,847.50
4. Step 4: Simplify right side
   105,594.30x = 8,429,573,565.45
5. Step 5: Solve for x
   x = 8,429,573,565.45/105,594.30
6. Step 6: Final answer
   x = 79,829.82