Finding the Fourth Proportional to 201,061.08, 301,641.30 and 142,012.08

Step by Step Solution

1. Step 1: Write the proportion equation
   201,061.08 : 301,641.30 = 142,012.08 : x
2. Step 2: Convert to fraction form
   201,061.08/301,641.30 = 142,012.08/x
3. Step 3: Cross multiply
   201,061.08x = 301,641.30 × 142,012.08
4. Step 4: Simplify right side
   201,061.08x = 42,836,708,426.90
5. Step 5: Solve for x
   x = 42,836,708,426.90/201,061.08
6. Step 6: Final answer
   x = 213,053.21