Finding the Fourth Proportional to 47,061.40, 64,948.14 and 31,118.20

Step by Step Solution

1. Step 1: Write the proportion equation
   47,061.40 : 64,948.14 = 31,118.20 : x
2. Step 2: Convert to fraction form
   47,061.40/64,948.14 = 31,118.20/x
3. Step 3: Cross multiply
   47,061.40x = 64,948.14 × 31,118.20
4. Step 4: Simplify right side
   47,061.40x = 2,021,069,210.15
5. Step 5: Solve for x
   x = 2,021,069,210.15/47,061.40
6. Step 6: Final answer
   x = 42,945.37