Finding the Fourth Proportional to 66,515,182.50, 91,124,285.94 and 64,028,298.09

Step by Step Solution

1. Step 1: Write the proportion equation
   66,515,182.50 : 91,124,285.94 = 64,028,298.09 : x
2. Step 2: Convert to fraction form
   66,515,182.50/91,124,285.94 = 64,028,298.09/x
3. Step 3: Cross multiply
   66,515,182.50x = 91,124,285.94 × 64,028,298.09
4. Step 4: Simplify right side
   66,515,182.50x = 5,834,532,943,404,716
5. Step 5: Solve for x
   x = 5,834,532,943,404,716/66,515,182.50
6. Step 6: Final answer
   x = 87,717,310.91