Finding the Fourth Proportional to 367,488.58, 551,018.28 and 142,586.34

Step by Step Solution

1. Step 1: Write the proportion equation
   367,488.58 : 551,018.28 = 142,586.34 : x
2. Step 2: Convert to fraction form
   367,488.58/551,018.28 = 142,586.34/x
3. Step 3: Cross multiply
   367,488.58x = 551,018.28 × 142,586.34
4. Step 4: Simplify right side
   367,488.58x = 78,567,679,818.30
5. Step 5: Solve for x
   x = 78,567,679,818.30/367,488.58
6. Step 6: Final answer
   x = 213,796.25