Finding the Fourth Proportional to 140,298.72, 193,605.12 and 76,624.32

Step by Step Solution

1. Step 1: Write the proportion equation
   140,298.72 : 193,605.12 = 76,624.32 : x
2. Step 2: Convert to fraction form
   140,298.72/193,605.12 = 76,624.32/x
3. Step 3: Cross multiply
   140,298.72x = 193,605.12 × 76,624.32
4. Step 4: Simplify right side
   140,298.72x = 14,834,860,668.52
5. Step 5: Solve for x
   x = 14,834,860,668.52/140,298.72
6. Step 6: Final answer
   x = 105,737.68