Finding the Fourth Proportional to 105,158.58, 145,119.17 and 67,432.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,158.58 : 145,119.17 = 67,432.98 : x
2. Step 2: Convert to fraction form
   105,158.58/145,119.17 = 67,432.98/x
3. Step 3: Cross multiply
   105,158.58x = 145,119.17 × 67,432.98
4. Step 4: Simplify right side
   105,158.58x = 9,785,818,088.23
5. Step 5: Solve for x
   x = 9,785,818,088.23/105,158.58
6. Step 6: Final answer
   x = 93,057.72