Finding the Fourth Proportional to 105,404,745.48, 145,425,391.30 and 58,987,624.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,404,745.48 : 145,425,391.30 = 58,987,624.20 : x
2. Step 2: Convert to fraction form
   105,404,745.48/145,425,391.30 = 58,987,624.20/x
3. Step 3: Cross multiply
   105,404,745.48x = 145,425,391.30 × 58,987,624.20
4. Step 4: Simplify right side
   105,404,745.48x = 8,578,298,331,142,351
5. Step 5: Solve for x
   x = 8,578,298,331,142,351/105,404,745.48
6. Step 6: Final answer
   x = 81,384,365.50