Finding the Fourth Proportional to 291,677.69, 436,836.72 and 281,575.58

Step by Step Solution

1. Step 1: Write the proportion equation
   291,677.69 : 436,836.72 = 281,575.58 : x
2. Step 2: Convert to fraction form
   291,677.69/436,836.72 = 281,575.58/x
3. Step 3: Cross multiply
   291,677.69x = 436,836.72 × 281,575.58
4. Step 4: Simplify right side
   291,677.69x = 123,002,550,615.11
5. Step 5: Solve for x
   x = 123,002,550,615.11/291,677.69
6. Step 6: Final answer
   x = 421,707.09