Finding the Fourth Proportional to 31,009.10, 43,490.50 and 31,009.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,009.10 : 43,490.50 = 31,009.10 : x
2. Step 2: Convert to fraction form
   31,009.10/43,490.50 = 31,009.10/x
3. Step 3: Cross multiply
   31,009.10x = 43,490.50 × 31,009.10
4. Step 4: Simplify right side
   31,009.10x = 1,348,601,263.55
5. Step 5: Solve for x
   x = 1,348,601,263.55/31,009.10
6. Step 6: Final answer
   x = 43,490.50