Finding the Fourth Proportional to 72,773,757.09, 108,829,075.50 and 54,342,645.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,773,757.09 : 108,829,075.50 = 54,342,645.10 : x
2. Step 2: Convert to fraction form
   72,773,757.09/108,829,075.50 = 54,342,645.10/x
3. Step 3: Cross multiply
   72,773,757.09x = 108,829,075.50 × 54,342,645.10
4. Step 4: Simplify right side
   72,773,757.09x = 5,914,059,825,828,775
5. Step 5: Solve for x
   x = 5,914,059,825,828,775/72,773,757.09
6. Step 6: Final answer
   x = 81,266,380.39