Finding the Fourth Proportional to 139,026.52, 208,539.82 and 50,278.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,026.52 : 208,539.82 = 50,278.04 : x
2. Step 2: Convert to fraction form
   139,026.52/208,539.82 = 50,278.04/x
3. Step 3: Cross multiply
   139,026.52x = 208,539.82 × 50,278.04
4. Step 4: Simplify right side
   139,026.52x = 10,484,973,411.55
5. Step 5: Solve for x
   x = 10,484,973,411.55/139,026.52
6. Step 6: Final answer
   x = 75,417.07