Finding the Fourth Proportional to 89,451.74, 134,426.82 and 83,528.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,451.74 : 134,426.82 = 83,528.40 : x
2. Step 2: Convert to fraction form
   89,451.74/134,426.82 = 83,528.40/x
3. Step 3: Cross multiply
   89,451.74x = 134,426.82 × 83,528.40
4. Step 4: Simplify right side
   89,451.74x = 11,228,457,191.69
5. Step 5: Solve for x
   x = 11,228,457,191.69/89,451.74
6. Step 6: Final answer
   x = 125,525.31