Finding the Fourth Proportional to 345,667.84, 518,512.96 and 109,012.80

Step by Step Solution

1. Step 1: Write the proportion equation
   345,667.84 : 518,512.96 = 109,012.80 : x
2. Step 2: Convert to fraction form
   345,667.84/518,512.96 = 109,012.80/x
3. Step 3: Cross multiply
   345,667.84x = 518,512.96 × 109,012.80
4. Step 4: Simplify right side
   345,667.84x = 56,524,549,605.89
5. Step 5: Solve for x
   x = 56,524,549,605.89/345,667.84
6. Step 6: Final answer
   x = 163,522.73