Finding the Fourth Proportional to 282,710.32, 390,142.68 and 155,388.88

Step by Step Solution

1. Step 1: Write the proportion equation
   282,710.32 : 390,142.68 = 155,388.88 : x
2. Step 2: Convert to fraction form
   282,710.32/390,142.68 = 155,388.88/x
3. Step 3: Cross multiply
   282,710.32x = 390,142.68 × 155,388.88
4. Step 4: Simplify right side
   282,710.32x = 60,623,834,085.40
5. Step 5: Solve for x
   x = 60,623,834,085.40/282,710.32
6. Step 6: Final answer
   x = 214,437.99