Finding the Fourth Proportional to 87,875, 131,814.72 and 31,719.92

Step by Step Solution

1. Step 1: Write the proportion equation
   87,875 : 131,814.72 = 31,719.92 : x
2. Step 2: Convert to fraction form
   87,875/131,814.72 = 31,719.92/x
3. Step 3: Cross multiply
   87,875x = 131,814.72 × 31,719.92
4. Step 4: Simplify right side
   87,875x = 4,181,152,373.22
5. Step 5: Solve for x
   x = 4,181,152,373.22/87,875
6. Step 6: Final answer
   x = 47,580.68