Finding the Fourth Proportional to 123,796.08, 185,672.16 and 56,312.40

Step by Step Solution

1. Step 1: Write the proportion equation
   123,796.08 : 185,672.16 = 56,312.40 : x
2. Step 2: Convert to fraction form
   123,796.08/185,672.16 = 56,312.40/x
3. Step 3: Cross multiply
   123,796.08x = 185,672.16 × 56,312.40
4. Step 4: Simplify right side
   123,796.08x = 10,455,644,942.78
5. Step 5: Solve for x
   x = 10,455,644,942.78/123,796.08
6. Step 6: Final answer
   x = 84,458.61