Finding the Fourth Proportional to 345,700.67, 518,550.98 and 109,061.80

Step by Step Solution

1. Step 1: Write the proportion equation
   345,700.67 : 518,550.98 = 109,061.80 : x
2. Step 2: Convert to fraction form
   345,700.67/518,550.98 = 109,061.80/x
3. Step 3: Cross multiply
   345,700.67x = 518,550.98 × 109,061.80
4. Step 4: Simplify right side
   345,700.67x = 56,554,101,428.88
5. Step 5: Solve for x
   x = 56,554,101,428.88/345,700.67
6. Step 6: Final answer
   x = 163,592.69