Finding the Fourth Proportional to 67,180,742.28, 100,787,105.25 and 21,742,536.78

Step by Step Solution

1. Step 1: Write the proportion equation
   67,180,742.28 : 100,787,105.25 = 21,742,536.78 : x
2. Step 2: Convert to fraction form
   67,180,742.28/100,787,105.25 = 21,742,536.78/x
3. Step 3: Cross multiply
   67,180,742.28x = 100,787,105.25 × 21,742,536.78
4. Step 4: Simplify right side
   67,180,742.28x = 2,191,367,342,847,856.25
5. Step 5: Solve for x
   x = 2,191,367,342,847,856.25/67,180,742.28
6. Step 6: Final answer
   x = 32,618,980.80