Finding the Fourth Proportional to 123,051.20, 184,663.20 and 52,980.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,051.20 : 184,663.20 = 52,980.80 : x
2. Step 2: Convert to fraction form
   123,051.20/184,663.20 = 52,980.80/x
3. Step 3: Cross multiply
   123,051.20x = 184,663.20 × 52,980.80
4. Step 4: Simplify right side
   123,051.20x = 9,783,604,066.56
5. Step 5: Solve for x
   x = 9,783,604,066.56/123,051.20
6. Step 6: Final answer
   x = 79,508.40