Finding the Fourth Proportional to 139,438.16, 209,155.42 and 34,258.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,438.16 : 209,155.42 = 34,258.04 : x
2. Step 2: Convert to fraction form
   139,438.16/209,155.42 = 34,258.04/x
3. Step 3: Cross multiply
   139,438.16x = 209,155.42 × 34,258.04
4. Step 4: Simplify right side
   139,438.16x = 7,165,254,333.25
5. Step 5: Solve for x
   x = 7,165,254,333.25/139,438.16
6. Step 6: Final answer
   x = 51,386.61