Finding the Fourth Proportional to 105,935.95, 146,285.31 and 72,070.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,935.95 : 146,285.31 = 72,070.24 : x
2. Step 2: Convert to fraction form
   105,935.95/146,285.31 = 72,070.24/x
3. Step 3: Cross multiply
   105,935.95x = 146,285.31 × 72,070.24
4. Step 4: Simplify right side
   105,935.95x = 10,542,817,400.17
5. Step 5: Solve for x
   x = 10,542,817,400.17/105,935.95
6. Step 6: Final answer
   x = 99,520.68