Finding the Fourth Proportional to 139,033.47, 208,612.51 and 64,113.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,033.47 : 208,612.51 = 64,113.46 : x
2. Step 2: Convert to fraction form
   139,033.47/208,612.51 = 64,113.46/x
3. Step 3: Cross multiply
   139,033.47x = 208,612.51 × 64,113.46
4. Step 4: Simplify right side
   139,033.47x = 13,374,868,772.32
5. Step 5: Solve for x
   x = 13,374,868,772.32/139,033.47
6. Step 6: Final answer
   x = 96,198.91