Finding the Fourth Proportional to 39,949,896.79, 55,130,856.71 and 21,615,182.29

Step by Step Solution

1. Step 1: Write the proportion equation
   39,949,896.79 : 55,130,856.71 = 21,615,182.29 : x
2. Step 2: Convert to fraction form
   39,949,896.79/55,130,856.71 = 21,615,182.29/x
3. Step 3: Cross multiply
   39,949,896.79x = 55,130,856.71 × 21,615,182.29
4. Step 4: Simplify right side
   39,949,896.79x = 1,191,663,517,590,519.75
5. Step 5: Solve for x
   x = 1,191,663,517,590,519.75/39,949,896.79
6. Step 6: Final answer
   x = 29,828,951.09