Finding the Fourth Proportional to 105,366.47, 145,405.88 and 59,426.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,366.47 : 145,405.88 = 59,426.72 : x
2. Step 2: Convert to fraction form
   105,366.47/145,405.88 = 59,426.72/x
3. Step 3: Cross multiply
   105,366.47x = 145,405.88 × 59,426.72
4. Step 4: Simplify right side
   105,366.47x = 8,640,993,492.95
5. Step 5: Solve for x
   x = 8,640,993,492.95/105,366.47
6. Step 6: Final answer
   x = 82,008.95