Finding the Fourth Proportional to 139,602.56, 192,722.88 and 107,699.84

Step by Step Solution

1. Step 1: Write the proportion equation
   139,602.56 : 192,722.88 = 107,699.84 : x
2. Step 2: Convert to fraction form
   139,602.56/192,722.88 = 107,699.84/x
3. Step 3: Cross multiply
   139,602.56x = 192,722.88 × 107,699.84
4. Step 4: Simplify right side
   139,602.56x = 20,756,223,340.34
5. Step 5: Solve for x
   x = 20,756,223,340.34/139,602.56
6. Step 6: Final answer
   x = 148,680.82