Finding the Fourth Proportional to 56,164.28, 77,506.72 and 31,013.76

Step by Step Solution

1. Step 1: Write the proportion equation
   56,164.28 : 77,506.72 = 31,013.76 : x
2. Step 2: Convert to fraction form
   56,164.28/77,506.72 = 31,013.76/x
3. Step 3: Cross multiply
   56,164.28x = 77,506.72 × 31,013.76
4. Step 4: Simplify right side
   56,164.28x = 2,403,774,812.47
5. Step 5: Solve for x
   x = 2,403,774,812.47/56,164.28
6. Step 6: Final answer
   x = 42,799.00