Finding the Fourth Proportional to 70,690.50, 106,111.28 and 28,598.09

Step by Step Solution

1. Step 1: Write the proportion equation
   70,690.50 : 106,111.28 = 28,598.09 : x
2. Step 2: Convert to fraction form
   70,690.50/106,111.28 = 28,598.09/x
3. Step 3: Cross multiply
   70,690.50x = 106,111.28 × 28,598.09
4. Step 4: Simplify right side
   70,690.50x = 3,034,579,792.46
5. Step 5: Solve for x
   x = 3,034,579,792.46/70,690.50
6. Step 6: Final answer
   x = 42,927.69