Finding the Fourth Proportional to 105,590.17, 145,718.06 and 57,843.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,590.17 : 145,718.06 = 57,843.50 : x
2. Step 2: Convert to fraction form
   105,590.17/145,718.06 = 57,843.50/x
3. Step 3: Cross multiply
   105,590.17x = 145,718.06 × 57,843.50
4. Step 4: Simplify right side
   105,590.17x = 8,428,842,405.47
5. Step 5: Solve for x
   x = 8,428,842,405.47/105,590.17
6. Step 6: Final answer
   x = 79,826.02