Finding the Fourth Proportional to 64,113.89, 96,181.91 and 28,587.83

Step by Step Solution

1. Step 1: Write the proportion equation
   64,113.89 : 96,181.91 = 28,587.83 : x
2. Step 2: Convert to fraction form
   64,113.89/96,181.91 = 28,587.83/x
3. Step 3: Cross multiply
   64,113.89x = 96,181.91 × 28,587.83
4. Step 4: Simplify right side
   64,113.89x = 2,749,631,949.22
5. Step 5: Solve for x
   x = 2,749,631,949.22/64,113.89
6. Step 6: Final answer
   x = 42,886.68