Finding the Fourth Proportional to 139,417.71, 209,127.27 and 34,236.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,417.71 : 209,127.27 = 34,236.72 : x
2. Step 2: Convert to fraction form
   139,417.71/209,127.27 = 34,236.72/x
3. Step 3: Cross multiply
   139,417.71x = 209,127.27 × 34,236.72
4. Step 4: Simplify right side
   139,417.71x = 7,159,831,787.35
5. Step 5: Solve for x
   x = 7,159,831,787.35/139,417.71
6. Step 6: Final answer
   x = 51,355.25