Finding the Fourth Proportional to 112,810.42, 169,216.02 and 28,570.54

Step by Step Solution

1. Step 1: Write the proportion equation
   112,810.42 : 169,216.02 = 28,570.54 : x
2. Step 2: Convert to fraction form
   112,810.42/169,216.02 = 28,570.54/x
3. Step 3: Cross multiply
   112,810.42x = 169,216.02 × 28,570.54
4. Step 4: Simplify right side
   112,810.42x = 4,834,593,068.05
5. Step 5: Solve for x
   x = 4,834,593,068.05/112,810.42
6. Step 6: Final answer
   x = 42,855.91