Finding the Fourth Proportional to 666,127, 919,255.28 and 364,321

Step by Step Solution

1. Step 1: Write the proportion equation
   666,127 : 919,255.28 = 364,321 : x
2. Step 2: Convert to fraction form
   666,127/919,255.28 = 364,321/x
3. Step 3: Cross multiply
   666,127x = 919,255.28 × 364,321
4. Step 4: Simplify right side
   666,127x = 334,904,002,864.88
5. Step 5: Solve for x
   x = 334,904,002,864.88/666,127
6. Step 6: Final answer
   x = 502,762.99