Finding the Fourth Proportional to 64,886.50, 89,543.46 and 35,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,886.50 : 89,543.46 = 35,078.50 : x
2. Step 2: Convert to fraction form
   64,886.50/89,543.46 = 35,078.50/x
3. Step 3: Cross multiply
   64,886.50x = 89,543.46 × 35,078.50
4. Step 4: Simplify right side
   64,886.50x = 3,141,050,261.61
5. Step 5: Solve for x
   x = 3,141,050,261.61/64,886.50
6. Step 6: Final answer
   x = 48,408.38