Finding the Fourth Proportional to 30,926.94, 42,679.28 and 16,779.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,926.94 : 42,679.28 = 16,779.88 : x
2. Step 2: Convert to fraction form
   30,926.94/42,679.28 = 16,779.88/x
3. Step 3: Cross multiply
   30,926.94x = 42,679.28 × 16,779.88
4. Step 4: Simplify right side
   30,926.94x = 716,153,196.89
5. Step 5: Solve for x
   x = 716,153,196.89/30,926.94
6. Step 6: Final answer
   x = 23,156.29