Finding the Fourth Proportional to 139,574.08, 209,359.24 and 34,393.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,574.08 : 209,359.24 = 34,393.96 : x
2. Step 2: Convert to fraction form
   139,574.08/209,359.24 = 34,393.96/x
3. Step 3: Cross multiply
   139,574.08x = 209,359.24 × 34,393.96
4. Step 4: Simplify right side
   139,574.08x = 7,200,693,326.19
5. Step 5: Solve for x
   x = 7,200,693,326.19/139,574.08
6. Step 6: Final answer
   x = 51,590.48