Finding the Fourth Proportional to 347,196.78, 520,836.78 and 122,510.78

Step by Step Solution

1. Step 1: Write the proportion equation
   347,196.78 : 520,836.78 = 122,510.78 : x
2. Step 2: Convert to fraction form
   347,196.78/520,836.78 = 122,510.78/x
3. Step 3: Cross multiply
   347,196.78x = 520,836.78 × 122,510.78
4. Step 4: Simplify right side
   347,196.78x = 63,808,119,978.86
5. Step 5: Solve for x
   x = 63,808,119,978.86/347,196.78
6. Step 6: Final answer
   x = 183,780.85