Finding the Fourth Proportional to 105,641.40, 145,748.83 and 62,612.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105,641.40 : 145,748.83 = 62,612.18 : x
2. Step 2: Convert to fraction form
   105,641.40/145,748.83 = 62,612.18/x
3. Step 3: Cross multiply
   105,641.40x = 145,748.83 × 62,612.18
4. Step 4: Simplify right side
   105,641.40x = 9,125,651,978.75
5. Step 5: Solve for x
   x = 9,125,651,978.75/105,641.40
6. Step 6: Final answer
   x = 86,383.29