Finding the Fourth Proportional to 89,498.79, 123,528.20 and 70,079.09

Step by Step Solution

1. Step 1: Write the proportion equation
   89,498.79 : 123,528.20 = 70,079.09 : x
2. Step 2: Convert to fraction form
   89,498.79/123,528.20 = 70,079.09/x
3. Step 3: Cross multiply
   89,498.79x = 123,528.20 × 70,079.09
4. Step 4: Simplify right side
   89,498.79x = 8,656,742,877.30
5. Step 5: Solve for x
   x = 8,656,742,877.30/89,498.79
6. Step 6: Final answer
   x = 96,724.69