Finding the Fourth Proportional to 105,536,288.52, 145,636,557.06 and 58,491,357.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,536,288.52 : 145,636,557.06 = 58,491,357.28 : x
2. Step 2: Convert to fraction form
   105,536,288.52/145,636,557.06 = 58,491,357.28/x
3. Step 3: Cross multiply
   105,536,288.52x = 145,636,557.06 × 58,491,357.28
4. Step 4: Simplify right side
   105,536,288.52x = 8,518,479,892,025,567
5. Step 5: Solve for x
   x = 8,518,479,892,025,567/105,536,288.52
6. Step 6: Final answer
   x = 80,716,121.55