Finding the Fourth Proportional to 124,498.67, 171,809.06 and 70,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,498.67 : 171,809.06 = 70,780.50 : x
2. Step 2: Convert to fraction form
   124,498.67/171,809.06 = 70,780.50/x
3. Step 3: Cross multiply
   124,498.67x = 171,809.06 × 70,780.50
4. Step 4: Simplify right side
   124,498.67x = 12,160,730,817.43
5. Step 5: Solve for x
   x = 12,160,730,817.43/124,498.67
6. Step 6: Final answer
   x = 97,677.60