Finding the Fourth Proportional to 72,581,522.20, 108,746,312.10 and 47,009,368.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,581,522.20 : 108,746,312.10 = 47,009,368.60 : x
2. Step 2: Convert to fraction form
   72,581,522.20/108,746,312.10 = 47,009,368.60/x
3. Step 3: Cross multiply
   72,581,522.20x = 108,746,312.10 × 47,009,368.60
4. Step 4: Simplify right side
   72,581,522.20x = 5,112,095,469,399,540
5. Step 5: Solve for x
   x = 5,112,095,469,399,540/72,581,522.20
6. Step 6: Final answer
   x = 70,432,464.28