Finding the Fourth Proportional to 89,574.30, 134,250.72 and 45,213.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,574.30 : 134,250.72 = 45,213.72 : x
2. Step 2: Convert to fraction form
   89,574.30/134,250.72 = 45,213.72/x
3. Step 3: Cross multiply
   89,574.30x = 134,250.72 × 45,213.72
4. Step 4: Simplify right side
   89,574.30x = 6,069,974,463.88
5. Step 5: Solve for x
   x = 6,069,974,463.88/89,574.30
6. Step 6: Final answer
   x = 67,764.69