Finding the Fourth Proportional to 49,920,105.20, 70,089,701.20 and 49,920,105.20

Step by Step Solution

1. Step 1: Write the proportion equation
   49,920,105.20 : 70,089,701.20 = 49,920,105.20 : x
2. Step 2: Convert to fraction form
   49,920,105.20/70,089,701.20 = 49,920,105.20/x
3. Step 3: Cross multiply
   49,920,105.20x = 70,089,701.20 × 49,920,105.20
4. Step 4: Simplify right side
   49,920,105.20x = 3,498,885,257,340,566.50
5. Step 5: Solve for x
   x = 3,498,885,257,340,566.50/49,920,105.20
6. Step 6: Final answer
   x = 70,089,701.20