Finding the Fourth Proportional to 476,484.09, 714,673.82 and 139,528.10

Step by Step Solution

1. Step 1: Write the proportion equation
   476,484.09 : 714,673.82 = 139,528.10 : x
2. Step 2: Convert to fraction form
   476,484.09/714,673.82 = 139,528.10/x
3. Step 3: Cross multiply
   476,484.09x = 714,673.82 × 139,528.10
4. Step 4: Simplify right side
   476,484.09x = 99,717,080,224.34
5. Step 5: Solve for x
   x = 99,717,080,224.34/476,484.09
6. Step 6: Final answer
   x = 209,276.83