Finding the Fourth Proportional to 139,477.32, 209,214.15 and 34,297.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,477.32 : 209,214.15 = 34,297.20 : x
2. Step 2: Convert to fraction form
   139,477.32/209,214.15 = 34,297.20/x
3. Step 3: Cross multiply
   139,477.32x = 209,214.15 × 34,297.20
4. Step 4: Simplify right side
   139,477.32x = 7,175,459,545.38
5. Step 5: Solve for x
   x = 7,175,459,545.38/139,477.32
6. Step 6: Final answer
   x = 51,445.35