Finding the Fourth Proportional to 89,192.56, 133,801.28 and 30,045.20

Step by Step Solution

1. Step 1: Write the proportion equation
   89,192.56 : 133,801.28 = 30,045.20 : x
2. Step 2: Convert to fraction form
   89,192.56/133,801.28 = 30,045.20/x
3. Step 3: Cross multiply
   89,192.56x = 133,801.28 × 30,045.20
4. Step 4: Simplify right side
   89,192.56x = 4,020,086,217.86
5. Step 5: Solve for x
   x = 4,020,086,217.86/89,192.56
6. Step 6: Final answer
   x = 45,071.99