Finding the Fourth Proportional to 105,404.67, 145,429.16 and 62,947.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,404.67 : 145,429.16 = 62,947.71 : x
2. Step 2: Convert to fraction form
   105,404.67/145,429.16 = 62,947.71/x
3. Step 3: Cross multiply
   105,404.67x = 145,429.16 × 62,947.71
4. Step 4: Simplify right side
   105,404.67x = 9,154,432,274.49
5. Step 5: Solve for x
   x = 9,154,432,274.49/105,404.67
6. Step 6: Final answer
   x = 86,850.35