Finding the Fourth Proportional to 72,008,671.68, 99,386,131.68 and 54,574,607.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,008,671.68 : 99,386,131.68 = 54,574,607.52 : x
2. Step 2: Convert to fraction form
   72,008,671.68/99,386,131.68 = 54,574,607.52/x
3. Step 3: Cross multiply
   72,008,671.68x = 99,386,131.68 × 54,574,607.52
4. Step 4: Simplify right side
   72,008,671.68x = 5,423,959,129,367,039
5. Step 5: Solve for x
   x = 5,423,959,129,367,039/72,008,671.68
6. Step 6: Final answer
   x = 75,323,693.70