Finding the Fourth Proportional to 139,672.80, 192,752.48 and 76,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,672.80 : 192,752.48 = 76,014.72 : x
2. Step 2: Convert to fraction form
   139,672.80/192,752.48 = 76,014.72/x
3. Step 3: Cross multiply
   139,672.80x = 192,752.48 × 76,014.72
4. Step 4: Simplify right side
   139,672.80x = 14,652,025,796.51
5. Step 5: Solve for x
   x = 14,652,025,796.51/139,672.80
6. Step 6: Final answer
   x = 104,902.50