Finding the Fourth Proportional to 139,662.51, 209,495.71 and 39,822.74

Step by Step Solution

1. Step 1: Write the proportion equation
   139,662.51 : 209,495.71 = 39,822.74 : x
2. Step 2: Convert to fraction form
   139,662.51/209,495.71 = 39,822.74/x
3. Step 3: Cross multiply
   139,662.51x = 209,495.71 × 39,822.74
4. Step 4: Simplify right side
   139,662.51x = 8,342,692,978.35
5. Step 5: Solve for x
   x = 8,342,692,978.35/139,662.51
6. Step 6: Final answer
   x = 59,734.66