Finding the Fourth Proportional to 71,061.18, 106,582.05 and 21,148.98

Step by Step Solution

1. Step 1: Write the proportion equation
   71,061.18 : 106,582.05 = 21,148.98 : x
2. Step 2: Convert to fraction form
   71,061.18/106,582.05 = 21,148.98/x
3. Step 3: Cross multiply
   71,061.18x = 106,582.05 × 21,148.98
4. Step 4: Simplify right side
   71,061.18x = 2,254,101,643.81
5. Step 5: Solve for x
   x = 2,254,101,643.81/71,061.18
6. Step 6: Final answer
   x = 31,720.58