Finding the Fourth Proportional to 56,887.64, 78,499.50 and 31,738.76

Step by Step Solution

1. Step 1: Write the proportion equation
   56,887.64 : 78,499.50 = 31,738.76 : x
2. Step 2: Convert to fraction form
   56,887.64/78,499.50 = 31,738.76/x
3. Step 3: Cross multiply
   56,887.64x = 78,499.50 × 31,738.76
4. Step 4: Simplify right side
   56,887.64x = 2,491,476,790.62
5. Step 5: Solve for x
   x = 2,491,476,790.62/56,887.64
6. Step 6: Final answer
   x = 43,796.45