Finding the Fourth Proportional to 613,123.94, 919,824.30 and 186,697.89

Step by Step Solution

1. Step 1: Write the proportion equation
   613,123.94 : 919,824.30 = 186,697.89 : x
2. Step 2: Convert to fraction form
   613,123.94/919,824.30 = 186,697.89/x
3. Step 3: Cross multiply
   613,123.94x = 919,824.30 × 186,697.89
4. Step 4: Simplify right side
   613,123.94x = 171,729,255,980.73
5. Step 5: Solve for x
   x = 171,729,255,980.73/613,123.94
6. Step 6: Final answer
   x = 280,088.98