Finding the Fourth Proportional to 139,415.94, 208,843.25 and 64,432.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,415.94 : 208,843.25 = 64,432.82 : x
2. Step 2: Convert to fraction form
   139,415.94/208,843.25 = 64,432.82/x
3. Step 3: Cross multiply
   139,415.94x = 208,843.25 × 64,432.82
4. Step 4: Simplify right side
   139,415.94x = 13,456,359,735.41
5. Step 5: Solve for x
   x = 13,456,359,735.41/139,415.94
6. Step 6: Final answer
   x = 96,519.52