Finding the Fourth Proportional to 51,427.56, 70,967.78 and 30,209

Step by Step Solution

1. Step 1: Write the proportion equation
   51,427.56 : 70,967.78 = 30,209 : x
2. Step 2: Convert to fraction form
   51,427.56/70,967.78 = 30,209/x
3. Step 3: Cross multiply
   51,427.56x = 70,967.78 × 30,209
4. Step 4: Simplify right side
   51,427.56x = 2,143,865,666.02
5. Step 5: Solve for x
   x = 2,143,865,666.02/51,427.56
6. Step 6: Final answer
   x = 41,687.10