Finding the Fourth Proportional to 70,597.42, 105,933.09 and 28,487.98

Step by Step Solution

1. Step 1: Write the proportion equation
   70,597.42 : 105,933.09 = 28,487.98 : x
2. Step 2: Convert to fraction form
   70,597.42/105,933.09 = 28,487.98/x
3. Step 3: Cross multiply
   70,597.42x = 105,933.09 × 28,487.98
4. Step 4: Simplify right side
   70,597.42x = 3,017,819,749.26
5. Step 5: Solve for x
   x = 3,017,819,749.26/70,597.42
6. Step 6: Final answer
   x = 42,746.88