Finding the Fourth Proportional to 70,730.20, 105,988.38 and 47,314.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,730.20 : 105,988.38 = 47,314.72 : x
2. Step 2: Convert to fraction form
   70,730.20/105,988.38 = 47,314.72/x
3. Step 3: Cross multiply
   70,730.20x = 105,988.38 × 47,314.72
4. Step 4: Simplify right side
   70,730.20x = 5,014,810,522.95
5. Step 5: Solve for x
   x = 5,014,810,522.95/70,730.20
6. Step 6: Final answer
   x = 70,900.56