Finding the Fourth Proportional to 879,531.32, 1,213,755.56 and 477,123.32

Step by Step Solution

1. Step 1: Write the proportion equation
   879,531.32 : 1,213,755.56 = 477,123.32 : x
2. Step 2: Convert to fraction form
   879,531.32/1,213,755.56 = 477,123.32/x
3. Step 3: Cross multiply
   879,531.32x = 1,213,755.56 × 477,123.32
4. Step 4: Simplify right side
   879,531.32x = 579,111,074,001.27
5. Step 5: Solve for x
   x = 579,111,074,001.27/879,531.32
6. Step 6: Final answer
   x = 658,431.44