Finding the Fourth Proportional to 139,067.16, 191,912.40 and 75,404.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,067.16 : 191,912.40 = 75,404.76 : x
2. Step 2: Convert to fraction form
   139,067.16/191,912.40 = 75,404.76/x
3. Step 3: Cross multiply
   139,067.16x = 191,912.40 × 75,404.76
4. Step 4: Simplify right side
   139,067.16x = 14,471,108,463.02
5. Step 5: Solve for x
   x = 14,471,108,463.02/139,067.16
6. Step 6: Final answer
   x = 104,058.42