Finding the Fourth Proportional to 105,359.82, 145,397.33 and 59,420.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,359.82 : 145,397.33 = 59,420.06 : x
2. Step 2: Convert to fraction form
   105,359.82/145,397.33 = 59,420.06/x
3. Step 3: Cross multiply
   105,359.82x = 145,397.33 × 59,420.06
4. Step 4: Simplify right side
   105,359.82x = 8,639,518,634.28
5. Step 5: Solve for x
   x = 8,639,518,634.28/105,359.82
6. Step 6: Final answer
   x = 82,000.13