Finding the Fourth Proportional to 390,061.84, 538,323.52 and 237,086.64

Step by Step Solution

1. Step 1: Write the proportion equation
   390,061.84 : 538,323.52 = 237,086.64 : x
2. Step 2: Convert to fraction form
   390,061.84/538,323.52 = 237,086.64/x
3. Step 3: Cross multiply
   390,061.84x = 538,323.52 × 237,086.64
4. Step 4: Simplify right side
   390,061.84x = 127,629,314,589.77
5. Step 5: Solve for x
   x = 127,629,314,589.77/390,061.84
6. Step 6: Final answer
   x = 327,202.77