Finding the Fourth Proportional to 369,573.47, 510,008.91 and 208,429.91

Step by Step Solution

1. Step 1: Write the proportion equation
   369,573.47 : 510,008.91 = 208,429.91 : x
2. Step 2: Convert to fraction form
   369,573.47/510,008.91 = 208,429.91/x
3. Step 3: Cross multiply
   369,573.47x = 510,008.91 × 208,429.91
4. Step 4: Simplify right side
   369,573.47x = 106,301,111,210.50
5. Step 5: Solve for x
   x = 106,301,111,210.50/369,573.47
6. Step 6: Final answer
   x = 287,631.88