Finding the Fourth Proportional to 191,196.81, 263,840.76 and 106,312.05

Step by Step Solution

1. Step 1: Write the proportion equation
   191,196.81 : 263,840.76 = 106,312.05 : x
2. Step 2: Convert to fraction form
   191,196.81/263,840.76 = 106,312.05/x
3. Step 3: Cross multiply
   191,196.81x = 263,840.76 × 106,312.05
4. Step 4: Simplify right side
   191,196.81x = 28,049,452,069.16
5. Step 5: Solve for x
   x = 28,049,452,069.16/191,196.81
6. Step 6: Final answer
   x = 146,704.60