Finding the Fourth Proportional to 91,296,696.76, 125,915,978.61 and 80,259,848.17

Step by Step Solution

1. Step 1: Write the proportion equation
   91,296,696.76 : 125,915,978.61 = 80,259,848.17 : x
2. Step 2: Convert to fraction form
   91,296,696.76/125,915,978.61 = 80,259,848.17/x
3. Step 3: Cross multiply
   91,296,696.76x = 125,915,978.61 × 80,259,848.17
4. Step 4: Simplify right side
   91,296,696.76x = 10,105,997,325,415,568
5. Step 5: Solve for x
   x = 10,105,997,325,415,568/91,296,696.76
6. Step 6: Final answer
   x = 110,694,008.48