Finding the Fourth Proportional to 529,123.58, 730,196.04 and 287,410.88

Step by Step Solution

1. Step 1: Write the proportion equation
   529,123.58 : 730,196.04 = 287,410.88 : x
2. Step 2: Convert to fraction form
   529,123.58/730,196.04 = 287,410.88/x
3. Step 3: Cross multiply
   529,123.58x = 730,196.04 × 287,410.88
4. Step 4: Simplify right side
   529,123.58x = 209,866,286,428.92
5. Step 5: Solve for x
   x = 209,866,286,428.92/529,123.58
6. Step 6: Final answer
   x = 396,630.00