Finding the Fourth Proportional to 139,422.61, 209,123.06 and 44,662.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,422.61 : 209,123.06 = 44,662.64 : x
2. Step 2: Convert to fraction form
   139,422.61/209,123.06 = 44,662.64/x
3. Step 3: Cross multiply
   139,422.61x = 209,123.06 × 44,662.64
4. Step 4: Simplify right side
   139,422.61x = 9,339,987,721.17
5. Step 5: Solve for x
   x = 9,339,987,721.17/139,422.61
6. Step 6: Final answer
   x = 66,990.48