Finding the Fourth Proportional to 39,960,931.80, 55,146,085.23 and 21,626,217.30

Step by Step Solution

1. Step 1: Write the proportion equation
   39,960,931.80 : 55,146,085.23 = 21,626,217.30 : x
2. Step 2: Convert to fraction form
   39,960,931.80/55,146,085.23 = 21,626,217.30/x
3. Step 3: Cross multiply
   39,960,931.80x = 55,146,085.23 × 21,626,217.30
4. Step 4: Simplify right side
   39,960,931.80x = 1,192,601,222,428,300.50
5. Step 5: Solve for x
   x = 1,192,601,222,428,300.50/39,960,931.80
6. Step 6: Final answer
   x = 29,844,179.52