Finding the Fourth Proportional to 139,632, 192,690.72 and 83,042.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,632 : 192,690.72 = 83,042.16 : x
2. Step 2: Convert to fraction form
   139,632/192,690.72 = 83,042.16/x
3. Step 3: Cross multiply
   139,632x = 192,690.72 × 83,042.16
4. Step 4: Simplify right side
   139,632x = 16,001,453,600.76
5. Step 5: Solve for x
   x = 16,001,453,600.76/139,632
6. Step 6: Final answer
   x = 114,597.32