Finding the Fourth Proportional to 89,643, 123,741.18 and 70,472.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,643 : 123,741.18 = 70,472.76 : x
2. Step 2: Convert to fraction form
   89,643/123,741.18 = 70,472.76/x
3. Step 3: Cross multiply
   89,643x = 123,741.18 × 70,472.76
4. Step 4: Simplify right side
   89,643x = 8,720,382,480.26
5. Step 5: Solve for x
   x = 8,720,382,480.26/89,643
6. Step 6: Final answer
   x = 97,279.01