Finding the Fourth Proportional to 72,008,579.68, 99,386,004.80 and 54,574,515.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,008,579.68 : 99,386,004.80 = 54,574,515.52 : x
2. Step 2: Convert to fraction form
   72,008,579.68/99,386,004.80 = 54,574,515.52/x
3. Step 3: Cross multiply
   72,008,579.68x = 99,386,004.80 × 54,574,515.52
4. Step 4: Simplify right side
   72,008,579.68x = 5,423,943,061,428,395
5. Step 5: Solve for x
   x = 5,423,943,061,428,395/72,008,579.68
6. Step 6: Final answer
   x = 75,323,566.80