Finding the Fourth Proportional to 89,615.34, 134,441.38 and 74,926.90

Step by Step Solution

1. Step 1: Write the proportion equation
   89,615.34 : 134,441.38 = 74,926.90 : x
2. Step 2: Convert to fraction form
   89,615.34/134,441.38 = 74,926.90/x
3. Step 3: Cross multiply
   89,615.34x = 134,441.38 × 74,926.90
4. Step 4: Simplify right side
   89,615.34x = 10,073,275,835.12
5. Step 5: Solve for x
   x = 10,073,275,835.12/89,615.34
6. Step 6: Final answer
   x = 112,405.71