Finding the Fourth Proportional to 105,161.58, 145,123.31 and 67,435.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,161.58 : 145,123.31 = 67,435.98 : x
2. Step 2: Convert to fraction form
   105,161.58/145,123.31 = 67,435.98/x
3. Step 3: Cross multiply
   105,161.58x = 145,123.31 × 67,435.98
4. Step 4: Simplify right side
   105,161.58x = 9,786,532,630.69
5. Step 5: Solve for x
   x = 9,786,532,630.69/105,161.58
6. Step 6: Final answer
   x = 93,061.86