Finding the Fourth Proportional to 238,300.00, 357,340.99 and 142,280.79

Step by Step Solution

1. Step 1: Write the proportion equation
   238,300.00 : 357,340.99 = 142,280.79 : x
2. Step 2: Convert to fraction form
   238,300.00/357,340.99 = 142,280.79/x
3. Step 3: Cross multiply
   238,300.00x = 357,340.99 × 142,280.79
4. Step 4: Simplify right side
   238,300.00x = 50,842,758,835.32
5. Step 5: Solve for x
   x = 50,842,758,835.32/238,300.00
6. Step 6: Final answer
   x = 213,356.10