Finding the Fourth Proportional to 102,848.72, 141,929.35 and 58,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,848.72 : 141,929.35 = 58,136.72 : x
2. Step 2: Convert to fraction form
   102,848.72/141,929.35 = 58,136.72/x
3. Step 3: Cross multiply
   102,848.72x = 141,929.35 × 58,136.72
4. Step 4: Simplify right side
   102,848.72x = 8,251,306,880.73
5. Step 5: Solve for x
   x = 8,251,306,880.73/102,848.72
6. Step 6: Final answer
   x = 80,227.61