Finding the Fourth Proportional to 42,086.32, 63,069.32 and 30,905.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,086.32 : 63,069.32 = 30,905.28 : x
2. Step 2: Convert to fraction form
   42,086.32/63,069.32 = 30,905.28/x
3. Step 3: Cross multiply
   42,086.32x = 63,069.32 × 30,905.28
4. Step 4: Simplify right side
   42,086.32x = 1,949,174,994.01
5. Step 5: Solve for x
   x = 1,949,174,994.01/42,086.32
6. Step 6: Final answer
   x = 46,313.74