Finding the Fourth Proportional to 56,189.28, 77,540.16 and 31,038.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,189.28 : 77,540.16 = 31,038.24 : x
2. Step 2: Convert to fraction form
   56,189.28/77,540.16 = 31,038.24/x
3. Step 3: Cross multiply
   56,189.28x = 77,540.16 × 31,038.24
4. Step 4: Simplify right side
   56,189.28x = 2,406,710,095.72
5. Step 5: Solve for x
   x = 2,406,710,095.72/56,189.28
6. Step 6: Final answer
   x = 42,832.19