Finding the Fourth Proportional to 64,894.06, 89,557.98 and 38,026.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,894.06 : 89,557.98 = 38,026.78 : x
2. Step 2: Convert to fraction form
   64,894.06/89,557.98 = 38,026.78/x
3. Step 3: Cross multiply
   64,894.06x = 89,557.98 × 38,026.78
4. Step 4: Simplify right side
   64,894.06x = 3,405,601,602.70
5. Step 5: Solve for x
   x = 3,405,601,602.70/64,894.06
6. Step 6: Final answer
   x = 52,479.40