Finding the Fourth Proportional to 139,434.50, 209,109.83 and 39,602.81

Step by Step Solution

1. Step 1: Write the proportion equation
   139,434.50 : 209,109.83 = 39,602.81 : x
2. Step 2: Convert to fraction form
   139,434.50/209,109.83 = 39,602.81/x
3. Step 3: Cross multiply
   139,434.50x = 209,109.83 × 39,602.81
4. Step 4: Simplify right side
   139,434.50x = 8,281,335,623.06
5. Step 5: Solve for x
   x = 8,281,335,623.06/139,434.50
6. Step 6: Final answer
   x = 59,392.30