Finding the Fourth Proportional to 30,531.52, 42,111.68 and 19,776.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,531.52 : 42,111.68 = 19,776.32 : x
2. Step 2: Convert to fraction form
   30,531.52/42,111.68 = 19,776.32/x
3. Step 3: Cross multiply
   30,531.52x = 42,111.68 × 19,776.32
4. Step 4: Simplify right side
   30,531.52x = 832,814,059.42
5. Step 5: Solve for x
   x = 832,814,059.42/30,531.52
6. Step 6: Final answer
   x = 27,277.19