Finding the Fourth Proportional to 122,900.72, 184,349.86 and 56,321.96

Step by Step Solution

1. Step 1: Write the proportion equation
   122,900.72 : 184,349.86 = 56,321.96 : x
2. Step 2: Convert to fraction form
   122,900.72/184,349.86 = 56,321.96/x
3. Step 3: Cross multiply
   122,900.72x = 184,349.86 × 56,321.96
4. Step 4: Simplify right side
   122,900.72x = 10,382,944,378.37
5. Step 5: Solve for x
   x = 10,382,944,378.37/122,900.72
6. Step 6: Final answer
   x = 84,482.38