Finding the Fourth Proportional to 123,758.86, 185,608.55 and 57,134.99

Step by Step Solution

1. Step 1: Write the proportion equation
   123,758.86 : 185,608.55 = 57,134.99 : x
2. Step 2: Convert to fraction form
   123,758.86/185,608.55 = 57,134.99/x
3. Step 3: Cross multiply
   123,758.86x = 185,608.55 × 57,134.99
4. Step 4: Simplify right side
   123,758.86x = 10,604,742,826.51
5. Step 5: Solve for x
   x = 10,604,742,826.51/123,758.86
6. Step 6: Final answer
   x = 85,688.76