Finding the Fourth Proportional to 139,666.86, 192,734.56 and 76,004.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,666.86 : 192,734.56 = 76,004.70 : x
2. Step 2: Convert to fraction form
   139,666.86/192,734.56 = 76,004.70/x
3. Step 3: Cross multiply
   139,666.86x = 192,734.56 × 76,004.70
4. Step 4: Simplify right side
   139,666.86x = 14,648,732,412.43
5. Step 5: Solve for x
   x = 14,648,732,412.43/139,666.86
6. Step 6: Final answer
   x = 104,883.38