Finding the Fourth Proportional to 301,113.72, 415,530.72 and 186,361.86

Step by Step Solution

1. Step 1: Write the proportion equation
   301,113.72 : 415,530.72 = 186,361.86 : x
2. Step 2: Convert to fraction form
   301,113.72/415,530.72 = 186,361.86/x
3. Step 3: Cross multiply
   301,113.72x = 415,530.72 × 186,361.86
4. Step 4: Simplify right side
   301,113.72x = 77,439,077,866.34
5. Step 5: Solve for x
   x = 77,439,077,866.34/301,113.72
6. Step 6: Final answer
   x = 257,175.52