Finding the Fourth Proportional to 139,920.86, 209,881.27 and 34,739.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,920.86 : 209,881.27 = 34,739.82 : x
2. Step 2: Convert to fraction form
   139,920.86/209,881.27 = 34,739.82/x
3. Step 3: Cross multiply
   139,920.86x = 209,881.27 × 34,739.82
4. Step 4: Simplify right side
   139,920.86x = 7,291,237,454.32
5. Step 5: Solve for x
   x = 7,291,237,454.32/139,920.86
6. Step 6: Final answer
   x = 52,109.73