Finding the Fourth Proportional to 50,899.56, 70,308.74 and 42,429.40

Step by Step Solution

1. Step 1: Write the proportion equation
   50,899.56 : 70,308.74 = 42,429.40 : x
2. Step 2: Convert to fraction form
   50,899.56/70,308.74 = 42,429.40/x
3. Step 3: Cross multiply
   50,899.56x = 70,308.74 × 42,429.40
4. Step 4: Simplify right side
   50,899.56x = 2,983,157,652.96
5. Step 5: Solve for x
   x = 2,983,157,652.96/50,899.56
6. Step 6: Final answer
   x = 58,608.71