Finding the Fourth Proportional to 61,810.37, 93,178.83 and 57,690.74

Step by Step Solution

1. Step 1: Write the proportion equation
   61,810.37 : 93,178.83 = 57,690.74 : x
2. Step 2: Convert to fraction form
   61,810.37/93,178.83 = 57,690.74/x
3. Step 3: Cross multiply
   61,810.37x = 93,178.83 × 57,690.74
4. Step 4: Simplify right side
   61,810.37x = 5,375,555,538.56
5. Step 5: Solve for x
   x = 5,375,555,538.56/61,810.37
6. Step 6: Final answer
   x = 86,968.50