Finding the Fourth Proportional to 123,985.10, 185,686.05 and 123,985.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,985.10 : 185,686.05 = 123,985.10 : x
2. Step 2: Convert to fraction form
   123,985.10/185,686.05 = 123,985.10/x
3. Step 3: Cross multiply
   123,985.10x = 185,686.05 × 123,985.10
4. Step 4: Simplify right side
   123,985.10x = 23,022,303,477.86
5. Step 5: Solve for x
   x = 23,022,303,477.86/123,985.10
6. Step 6: Final answer
   x = 185,686.05