Finding the Fourth Proportional to 42,525.73, 58,611.27 and 31,171.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,525.73 : 58,611.27 = 31,171.15 : x
2. Step 2: Convert to fraction form
   42,525.73/58,611.27 = 31,171.15/x
3. Step 3: Cross multiply
   42,525.73x = 58,611.27 × 31,171.15
4. Step 4: Simplify right side
   42,525.73x = 1,826,980,688.86
5. Step 5: Solve for x
   x = 1,826,980,688.86/42,525.73
6. Step 6: Final answer
   x = 42,961.77