Finding the Fourth Proportional to 64,638.96, 89,208.78 and 37,790.52

Step by Step Solution

1. Step 1: Write the proportion equation
   64,638.96 : 89,208.78 = 37,790.52 : x
2. Step 2: Convert to fraction form
   64,638.96/89,208.78 = 37,790.52/x
3. Step 3: Cross multiply
   64,638.96x = 89,208.78 × 37,790.52
4. Step 4: Simplify right side
   64,638.96x = 3,371,246,184.77
5. Step 5: Solve for x
   x = 3,371,246,184.77/64,638.96
6. Step 6: Final answer
   x = 52,155.02