Finding the Fourth Proportional to 191,770.60, 264,632.62 and 105,726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   191,770.60 : 264,632.62 = 105,726.72 : x
2. Step 2: Convert to fraction form
   191,770.60/264,632.62 = 105,726.72/x
3. Step 3: Cross multiply
   191,770.60x = 264,632.62 × 105,726.72
4. Step 4: Simplify right side
   191,770.60x = 27,978,738,917.61
5. Step 5: Solve for x
   x = 27,978,738,917.61/191,770.60
6. Step 6: Final answer
   x = 145,896.91