Finding the Fourth Proportional to 64,019.70, 88,345.35 and 35,724.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,019.70 : 88,345.35 = 35,724.78 : x
2. Step 2: Convert to fraction form
   64,019.70/88,345.35 = 35,724.78/x
3. Step 3: Cross multiply
   64,019.70x = 88,345.35 × 35,724.78
4. Step 4: Simplify right side
   64,019.70x = 3,156,118,192.77
5. Step 5: Solve for x
   x = 3,156,118,192.77/64,019.70
6. Step 6: Final answer
   x = 49,299.17