Finding the Fourth Proportional to 105,556,570.52, 145,581,693.37 and 74,298,096.63

Step by Step Solution

1. Step 1: Write the proportion equation
   105,556,570.52 : 145,581,693.37 = 74,298,096.63 : x
2. Step 2: Convert to fraction form
   105,556,570.52/145,581,693.37 = 74,298,096.63/x
3. Step 3: Cross multiply
   105,556,570.52x = 145,581,693.37 × 74,298,096.63
4. Step 4: Simplify right side
   105,556,570.52x = 10,816,442,721,377,544
5. Step 5: Solve for x
   x = 10,816,442,721,377,544/105,556,570.52
6. Step 6: Final answer
   x = 102,470,577.33