Finding the Fourth Proportional to 64,798.56, 88,838.82 and 63,617.58

Step by Step Solution

1. Step 1: Write the proportion equation
   64,798.56 : 88,838.82 = 63,617.58 : x
2. Step 2: Convert to fraction form
   64,798.56/88,838.82 = 63,617.58/x
3. Step 3: Cross multiply
   64,798.56x = 88,838.82 × 63,617.58
4. Step 4: Simplify right side
   64,798.56x = 5,651,710,738.46
5. Step 5: Solve for x
   x = 5,651,710,738.46/64,798.56
6. Step 6: Final answer
   x = 87,219.70