Finding the Fourth Proportional to 218,978.16, 302,034.27 and 142,355.93

Step by Step Solution

1. Step 1: Write the proportion equation
   218,978.16 : 302,034.27 = 142,355.93 : x
2. Step 2: Convert to fraction form
   218,978.16/302,034.27 = 142,355.93/x
3. Step 3: Cross multiply
   218,978.16x = 302,034.27 × 142,355.93
4. Step 4: Simplify right side
   218,978.16x = 42,996,369,319.58
5. Step 5: Solve for x
   x = 42,996,369,319.58/218,978.16
6. Step 6: Final answer
   x = 196,350.04