Finding the Fourth Proportional to 105,275.72, 145,306.37 and 88,253.00

Step by Step Solution

1. Step 1: Write the proportion equation
   105,275.72 : 145,306.37 = 88,253.00 : x
2. Step 2: Convert to fraction form
   105,275.72/145,306.37 = 88,253.00/x
3. Step 3: Cross multiply
   105,275.72x = 145,306.37 × 88,253.00
4. Step 4: Simplify right side
   105,275.72x = 12,823,721,903.81
5. Step 5: Solve for x
   x = 12,823,721,903.81/105,275.72
6. Step 6: Final answer
   x = 121,810.83