Finding the Fourth Proportional to 61,805.56, 93,171.58 and 57,685.94

Step by Step Solution

1. Step 1: Write the proportion equation
   61,805.56 : 93,171.58 = 57,685.94 : x
2. Step 2: Convert to fraction form
   61,805.56/93,171.58 = 57,685.94/x
3. Step 3: Cross multiply
   61,805.56x = 93,171.58 × 57,685.94
4. Step 4: Simplify right side
   61,805.56x = 5,374,690,173.59
5. Step 5: Solve for x
   x = 5,374,690,173.59/61,805.56
6. Step 6: Final answer
   x = 86,961.27