Finding the Fourth Proportional to 70,087.96, 105,145.76 and 25,715.12

Step by Step Solution

1. Step 1: Write the proportion equation
   70,087.96 : 105,145.76 = 25,715.12 : x
2. Step 2: Convert to fraction form
   70,087.96/105,145.76 = 25,715.12/x
3. Step 3: Cross multiply
   70,087.96x = 105,145.76 × 25,715.12
4. Step 4: Simplify right side
   70,087.96x = 2,703,835,835.89
5. Step 5: Solve for x
   x = 2,703,835,835.89/70,087.96
6. Step 6: Final answer
   x = 38,577.75