Finding the Fourth Proportional to 64,886, 89,542.70 and 35,078

Step by Step Solution

1. Step 1: Write the proportion equation
   64,886 : 89,542.70 = 35,078 : x
2. Step 2: Convert to fraction form
   64,886/89,542.70 = 35,078/x
3. Step 3: Cross multiply
   64,886x = 89,542.70 × 35,078
4. Step 4: Simplify right side
   64,886x = 3,140,978,830.60
5. Step 5: Solve for x
   x = 3,140,978,830.60/64,886
6. Step 6: Final answer
   x = 48,407.65