Finding the Fourth Proportional to 70,123.24, 105,106.94 and 53,428.22

Step by Step Solution

1. Step 1: Write the proportion equation
   70,123.24 : 105,106.94 = 53,428.22 : x
2. Step 2: Convert to fraction form
   70,123.24/105,106.94 = 53,428.22/x
3. Step 3: Cross multiply
   70,123.24x = 105,106.94 × 53,428.22
4. Step 4: Simplify right side
   70,123.24x = 5,615,676,713.85
5. Step 5: Solve for x
   x = 5,615,676,713.85/70,123.24
6. Step 6: Final answer
   x = 80,082.96