Finding the Fourth Proportional to 80,617.12, 120,926.89 and 30,699.98

Step by Step Solution

1. Step 1: Write the proportion equation
   80,617.12 : 120,926.89 = 30,699.98 : x
2. Step 2: Convert to fraction form
   80,617.12/120,926.89 = 30,699.98/x
3. Step 3: Cross multiply
   80,617.12x = 120,926.89 × 30,699.98
4. Step 4: Simplify right side
   80,617.12x = 3,712,453,104.46
5. Step 5: Solve for x
   x = 3,712,453,104.46/80,617.12
6. Step 6: Final answer
   x = 46,050.43