Finding the Fourth Proportional to 50,919.32, 70,219.85 and 30,498.12

Step by Step Solution

1. Step 1: Write the proportion equation
   50,919.32 : 70,219.85 = 30,498.12 : x
2. Step 2: Convert to fraction form
   50,919.32/70,219.85 = 30,498.12/x
3. Step 3: Cross multiply
   50,919.32x = 70,219.85 × 30,498.12
4. Step 4: Simplify right side
   50,919.32x = 2,141,573,259.19
5. Step 5: Solve for x
   x = 2,141,573,259.19/50,919.32
6. Step 6: Final answer
   x = 42,058.17