Finding the Fourth Proportional to 123,039.78, 184,415.70 and 56,486.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123,039.78 : 184,415.70 = 56,486.34 : x
2. Step 2: Convert to fraction form
   123,039.78/184,415.70 = 56,486.34/x
3. Step 3: Cross multiply
   123,039.78x = 184,415.70 × 56,486.34
4. Step 4: Simplify right side
   123,039.78x = 10,416,967,931.54
5. Step 5: Solve for x
   x = 10,416,967,931.54/123,039.78
6. Step 6: Final answer
   x = 84,663.41