Finding the Fourth Proportional to 70,981.30, 106,494.12 and 21,061.63

Step by Step Solution

1. Step 1: Write the proportion equation
   70,981.30 : 106,494.12 = 21,061.63 : x
2. Step 2: Convert to fraction form
   70,981.30/106,494.12 = 21,061.63/x
3. Step 3: Cross multiply
   70,981.30x = 106,494.12 × 21,061.63
4. Step 4: Simplify right side
   70,981.30x = 2,242,939,752.62
5. Step 5: Solve for x
   x = 2,242,939,752.62/70,981.30
6. Step 6: Final answer
   x = 31,599.02