Finding the Fourth Proportional to 59,691.56, 89,455.12 and 30,128.99

Step by Step Solution

1. Step 1: Write the proportion equation
   59,691.56 : 89,455.12 = 30,128.99 : x
2. Step 2: Convert to fraction form
   59,691.56/89,455.12 = 30,128.99/x
3. Step 3: Cross multiply
   59,691.56x = 89,455.12 × 30,128.99
4. Step 4: Simplify right side
   59,691.56x = 2,695,191,893.33
5. Step 5: Solve for x
   x = 2,695,191,893.33/59,691.56
6. Step 6: Final answer
   x = 45,151.98