Finding the Fourth Proportional to 102,980, 142,114.56 and 58,268

Step by Step Solution

1. Step 1: Write the proportion equation
   102,980 : 142,114.56 = 58,268 : x
2. Step 2: Convert to fraction form
   102,980/142,114.56 = 58,268/x
3. Step 3: Cross multiply
   102,980x = 142,114.56 × 58,268
4. Step 4: Simplify right side
   102,980x = 8,280,731,182.08
5. Step 5: Solve for x
   x = 8,280,731,182.08/102,980
6. Step 6: Final answer
   x = 80,411.06