Finding the Fourth Proportional to 70,904.49, 106,364.52 and 28,778.45

Step by Step Solution

1. Step 1: Write the proportion equation
   70,904.49 : 106,364.52 = 28,778.45 : x
2. Step 2: Convert to fraction form
   70,904.49/106,364.52 = 28,778.45/x
3. Step 3: Cross multiply
   70,904.49x = 106,364.52 × 28,778.45
4. Step 4: Simplify right side
   70,904.49x = 3,061,005,488.77
5. Step 5: Solve for x
   x = 3,061,005,488.77/70,904.49
6. Step 6: Final answer
   x = 43,170.83