Finding the Fourth Proportional to 139,475.32, 209,211.15 and 34,295.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,475.32 : 209,211.15 = 34,295.20 : x
2. Step 2: Convert to fraction form
   139,475.32/209,211.15 = 34,295.20/x
3. Step 3: Cross multiply
   139,475.32x = 209,211.15 × 34,295.20
4. Step 4: Simplify right side
   139,475.32x = 7,174,937,185.42
5. Step 5: Solve for x
   x = 7,174,937,185.42/139,475.32
6. Step 6: Final answer
   x = 51,442.34