Finding the Fourth Proportional to 70,290.34, 105,435.57 and 28,737.34

Step by Step Solution

1. Step 1: Write the proportion equation
   70,290.34 : 105,435.57 = 28,737.34 : x
2. Step 2: Convert to fraction form
   70,290.34/105,435.57 = 28,737.34/x
3. Step 3: Cross multiply
   70,290.34x = 105,435.57 × 28,737.34
4. Step 4: Simplify right side
   70,290.34x = 3,029,937,823.18
5. Step 5: Solve for x
   x = 3,029,937,823.18/70,290.34
6. Step 6: Final answer
   x = 43,106.03