Finding the Fourth Proportional to 105,526.41, 145,606.19 and 71,562.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,526.41 : 145,606.19 = 71,562.57 : x
2. Step 2: Convert to fraction form
   105,526.41/145,606.19 = 71,562.57/x
3. Step 3: Cross multiply
   105,526.41x = 145,606.19 × 71,562.57
4. Step 4: Simplify right side
   105,526.41x = 10,419,952,806.50
5. Step 5: Solve for x
   x = 10,419,952,806.50/105,526.41
6. Step 6: Final answer
   x = 98,742.61