Finding the Fourth Proportional to 71,897.01, 107,845.78 and 21,976.91

Step by Step Solution

1. Step 1: Write the proportion equation
   71,897.01 : 107,845.78 = 21,976.91 : x
2. Step 2: Convert to fraction form
   71,897.01/107,845.78 = 21,976.91/x
3. Step 3: Cross multiply
   71,897.01x = 107,845.78 × 21,976.91
4. Step 4: Simplify right side
   71,897.01x = 2,370,117,155.71
5. Step 5: Solve for x
   x = 2,370,117,155.71/71,897.01
6. Step 6: Final answer
   x = 32,965.45