Finding the Fourth Proportional to 70,402.95, 105,582.89 and 28,260.82

Step by Step Solution

1. Step 1: Write the proportion equation
   70,402.95 : 105,582.89 = 28,260.82 : x
2. Step 2: Convert to fraction form
   70,402.95/105,582.89 = 28,260.82/x
3. Step 3: Cross multiply
   70,402.95x = 105,582.89 × 28,260.82
4. Step 4: Simplify right side
   70,402.95x = 2,983,859,548.95
5. Step 5: Solve for x
   x = 2,983,859,548.95/70,402.95
6. Step 6: Final answer
   x = 42,382.59