Finding the Fourth Proportional to 139,007.85, 208,350.48 and 63,970.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,007.85 : 208,350.48 = 63,970.46 : x
2. Step 2: Convert to fraction form
   139,007.85/208,350.48 = 63,970.46/x
3. Step 3: Cross multiply
   139,007.85x = 208,350.48 × 63,970.46
4. Step 4: Simplify right side
   139,007.85x = 13,328,276,046.82
5. Step 5: Solve for x
   x = 13,328,276,046.82/139,007.85
6. Step 6: Final answer
   x = 95,881.46