Finding the Fourth Proportional to 81,120,780, 121,688,669.52 and 26,533,674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,120,780 : 121,688,669.52 = 26,533,674.72 : x
2. Step 2: Convert to fraction form
   81,120,780/121,688,669.52 = 26,533,674.72/x
3. Step 3: Cross multiply
   81,120,780x = 121,688,669.52 × 26,533,674.72
4. Step 4: Simplify right side
   81,120,780x = 3,228,847,574,153,258.50
5. Step 5: Solve for x
   x = 3,228,847,574,153,258.50/81,120,780
6. Step 6: Final answer
   x = 39,802,965.09