Finding the Fourth Proportional to 139,283, 192,212.80 and 78,852.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,283 : 192,212.80 = 78,852.08 : x
2. Step 2: Convert to fraction form
   139,283/192,212.80 = 78,852.08/x
3. Step 3: Cross multiply
   139,283x = 192,212.80 × 78,852.08
4. Step 4: Simplify right side
   139,283x = 15,156,379,082.62
5. Step 5: Solve for x
   x = 15,156,379,082.62/139,283
6. Step 6: Final answer
   x = 108,817.15