Finding the Fourth Proportional to 102,639, 141,624.54 and 68,592.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,639 : 141,624.54 = 68,592.72 : x
2. Step 2: Convert to fraction form
   102,639/141,624.54 = 68,592.72/x
3. Step 3: Cross multiply
   102,639x = 141,624.54 × 68,592.72
4. Step 4: Simplify right side
   102,639x = 9,714,412,417.35
5. Step 5: Solve for x
   x = 9,714,412,417.35/102,639
6. Step 6: Final answer
   x = 94,646.41