Finding the Fourth Proportional to 92,899.72, 128,182.83 and 56,576.83

Step by Step Solution

1. Step 1: Write the proportion equation
   92,899.72 : 128,182.83 = 56,576.83 : x
2. Step 2: Convert to fraction form
   92,899.72/128,182.83 = 56,576.83/x
3. Step 3: Cross multiply
   92,899.72x = 128,182.83 × 56,576.83
4. Step 4: Simplify right side
   92,899.72x = 7,252,178,181.83
5. Step 5: Solve for x
   x = 7,252,178,181.83/92,899.72
6. Step 6: Final answer
   x = 78,064.59