Finding the Fourth Proportional to 139,402.84, 209,108.37 and 34,221.81

Step by Step Solution

1. Step 1: Write the proportion equation
   139,402.84 : 209,108.37 = 34,221.81 : x
2. Step 2: Convert to fraction form
   139,402.84/209,108.37 = 34,221.81/x
3. Step 3: Cross multiply
   139,402.84x = 209,108.37 × 34,221.81
4. Step 4: Simplify right side
   139,402.84x = 7,156,066,907.55
5. Step 5: Solve for x
   x = 7,156,066,907.55/139,402.84
6. Step 6: Final answer
   x = 51,333.72