Finding the Fourth Proportional to 105,191.97, 145,145.72 and 59,867.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,191.97 : 145,145.72 = 59,867.30 : x
2. Step 2: Convert to fraction form
   105,191.97/145,145.72 = 59,867.30/x
3. Step 3: Cross multiply
   105,191.97x = 145,145.72 × 59,867.30
4. Step 4: Simplify right side
   105,191.97x = 8,689,482,875.49
5. Step 5: Solve for x
   x = 8,689,482,875.49/105,191.97
6. Step 6: Final answer
   x = 82,605.96