Finding the Fourth Proportional to 191,131.59, 263,777.54 and 106,256.55

Step by Step Solution

1. Step 1: Write the proportion equation
   191,131.59 : 263,777.54 = 106,256.55 : x
2. Step 2: Convert to fraction form
   191,131.59/263,777.54 = 106,256.55/x
3. Step 3: Cross multiply
   191,131.59x = 263,777.54 × 106,256.55
4. Step 4: Simplify right side
   191,131.59x = 28,028,090,836.60
5. Step 5: Solve for x
   x = 28,028,090,836.60/191,131.59
6. Step 6: Final answer
   x = 146,642.90