Finding the Fourth Proportional to 139,268.70, 208,876.38 and 39,404.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,268.70 : 208,876.38 = 39,404.82 : x
2. Step 2: Convert to fraction form
   139,268.70/208,876.38 = 39,404.82/x
3. Step 3: Cross multiply
   139,268.70x = 208,876.38 × 39,404.82
4. Step 4: Simplify right side
   139,268.70x = 8,230,736,156.15
5. Step 5: Solve for x
   x = 8,230,736,156.15/139,268.70
6. Step 6: Final answer
   x = 59,099.68