Finding the Fourth Proportional to 59,911.68, 89,886.72 and 28,749.12

Step by Step Solution

1. Step 1: Write the proportion equation
   59,911.68 : 89,886.72 = 28,749.12 : x
2. Step 2: Convert to fraction form
   59,911.68/89,886.72 = 28,749.12/x
3. Step 3: Cross multiply
   59,911.68x = 89,886.72 × 28,749.12
4. Step 4: Simplify right side
   59,911.68x = 2,584,164,099.69
5. Step 5: Solve for x
   x = 2,584,164,099.69/59,911.68
6. Step 6: Final answer
   x = 43,132.89