Finding the Fourth Proportional to 54,499,043.26, 81,721,647.78 and 19,929,385.72

Step by Step Solution

1. Step 1: Write the proportion equation
   54,499,043.26 : 81,721,647.78 = 19,929,385.72 : x
2. Step 2: Convert to fraction form
   54,499,043.26/81,721,647.78 = 19,929,385.72/x
3. Step 3: Cross multiply
   54,499,043.26x = 81,721,647.78 × 19,929,385.72
4. Step 4: Simplify right side
   54,499,043.26x = 1,628,662,240,281,601.75
5. Step 5: Solve for x
   x = 1,628,662,240,281,601.75/54,499,043.26
6. Step 6: Final answer
   x = 29,884,235.44