Finding the Fourth Proportional to 61,011,560.24, 91,847,184.64 and 55,581,552.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,011,560.24 : 91,847,184.64 = 55,581,552.72 : x
2. Step 2: Convert to fraction form
   61,011,560.24/91,847,184.64 = 55,581,552.72/x
3. Step 3: Cross multiply
   61,011,560.24x = 91,847,184.64 × 55,581,552.72
4. Step 4: Simplify right side
   61,011,560.24x = 5,105,009,135,251,734
5. Step 5: Solve for x
   x = 5,105,009,135,251,734/61,011,560.24
6. Step 6: Final answer
   x = 83,672,817.33