Finding the Fourth Proportional to 146,272.42, 201,870.84 and 105,470.11

Step by Step Solution

1. Step 1: Write the proportion equation
   146,272.42 : 201,870.84 = 105,470.11 : x
2. Step 2: Convert to fraction form
   146,272.42/201,870.84 = 105,470.11/x
3. Step 3: Cross multiply
   146,272.42x = 201,870.84 × 105,470.11
4. Step 4: Simplify right side
   146,272.42x = 21,291,339,700.59
5. Step 5: Solve for x
   x = 21,291,339,700.59/146,272.42
6. Step 6: Final answer
   x = 145,559.50