Finding the Fourth Proportional to 339,971.56, 510,037.98 and 103,327.72

Step by Step Solution

1. Step 1: Write the proportion equation
   339,971.56 : 510,037.98 = 103,327.72 : x
2. Step 2: Convert to fraction form
   339,971.56/510,037.98 = 103,327.72/x
3. Step 3: Cross multiply
   339,971.56x = 510,037.98 × 103,327.72
4. Step 4: Simplify right side
   339,971.56x = 52,701,061,586.81
5. Step 5: Solve for x
   x = 52,701,061,586.81/339,971.56
6. Step 6: Final answer
   x = 155,016.09