Finding the Fourth Proportional to 140,162.10, 193,418.28 and 76,499.89

Step by Step Solution

1. Step 1: Write the proportion equation
   140,162.10 : 193,418.28 = 76,499.89 : x
2. Step 2: Convert to fraction form
   140,162.10/193,418.28 = 76,499.89/x
3. Step 3: Cross multiply
   140,162.10x = 193,418.28 × 76,499.89
4. Step 4: Simplify right side
   140,162.10x = 14,796,477,748.42
5. Step 5: Solve for x
   x = 14,796,477,748.42/140,162.10
6. Step 6: Final answer
   x = 105,566.90