Finding the Fourth Proportional to 70,219, 96,902.22 and 40,428.28

Step by Step Solution

1. Step 1: Write the proportion equation
   70,219 : 96,902.22 = 40,428.28 : x
2. Step 2: Convert to fraction form
   70,219/96,902.22 = 40,428.28/x
3. Step 3: Cross multiply
   70,219x = 96,902.22 × 40,428.28
4. Step 4: Simplify right side
   70,219x = 3,917,590,082.78
5. Step 5: Solve for x
   x = 3,917,590,082.78/70,219
6. Step 6: Final answer
   x = 55,791.03