Finding the Fourth Proportional to 103,499.78, 142,844.82 and 58,181.49

Step by Step Solution

1. Step 1: Write the proportion equation
   103,499.78 : 142,844.82 = 58,181.49 : x
2. Step 2: Convert to fraction form
   103,499.78/142,844.82 = 58,181.49/x
3. Step 3: Cross multiply
   103,499.78x = 142,844.82 × 58,181.49
4. Step 4: Simplify right side
   103,499.78x = 8,310,924,248.20
5. Step 5: Solve for x
   x = 8,310,924,248.20/103,499.78
6. Step 6: Final answer
   x = 80,298.96