Finding the Fourth Proportional to 191,672.78, 264,510.25 and 105,634.91

Step by Step Solution

1. Step 1: Write the proportion equation
   191,672.78 : 264,510.25 = 105,634.91 : x
2. Step 2: Convert to fraction form
   191,672.78/264,510.25 = 105,634.91/x
3. Step 3: Cross multiply
   191,672.78x = 264,510.25 × 105,634.91
4. Step 4: Simplify right side
   191,672.78x = 27,941,516,452.83
5. Step 5: Solve for x
   x = 27,941,516,452.83/191,672.78
6. Step 6: Final answer
   x = 145,777.18