Finding the Fourth Proportional to 64,695.82, 89,258.88 and 52,738.60

Step by Step Solution

1. Step 1: Write the proportion equation
   64,695.82 : 89,258.88 = 52,738.60 : x
2. Step 2: Convert to fraction form
   64,695.82/89,258.88 = 52,738.60/x
3. Step 3: Cross multiply
   64,695.82x = 89,258.88 × 52,738.60
4. Step 4: Simplify right side
   64,695.82x = 4,707,388,368.77
5. Step 5: Solve for x
   x = 4,707,388,368.77/64,695.82
6. Step 6: Final answer
   x = 72,761.86