Finding the Fourth Proportional to 385,667.34, 578,441.61 and 105,206.46

Step by Step Solution

1. Step 1: Write the proportion equation
   385,667.34 : 578,441.61 = 105,206.46 : x
2. Step 2: Convert to fraction form
   385,667.34/578,441.61 = 105,206.46/x
3. Step 3: Cross multiply
   385,667.34x = 578,441.61 × 105,206.46
4. Step 4: Simplify right side
   385,667.34x = 60,855,794,104.80
5. Step 5: Solve for x
   x = 60,855,794,104.80/385,667.34
6. Step 6: Final answer
   x = 157,793.49