Finding the Fourth Proportional to 28,266.56, 42,198.16 and 28,070.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,266.56 : 42,198.16 = 28,070.72 : x
2. Step 2: Convert to fraction form
   28,266.56/42,198.16 = 28,070.72/x
3. Step 3: Cross multiply
   28,266.56x = 42,198.16 × 28,070.72
4. Step 4: Simplify right side
   28,266.56x = 1,184,532,733.88
5. Step 5: Solve for x
   x = 1,184,532,733.88/28,266.56
6. Step 6: Final answer
   x = 41,905.80