Finding the Fourth Proportional to 92,006.48, 137,842.86 and 42,128.30

Step by Step Solution

1. Step 1: Write the proportion equation
   92,006.48 : 137,842.86 = 42,128.30 : x
2. Step 2: Convert to fraction form
   92,006.48/137,842.86 = 42,128.30/x
3. Step 3: Cross multiply
   92,006.48x = 137,842.86 × 42,128.30
4. Step 4: Simplify right side
   92,006.48x = 5,807,085,861.53
5. Step 5: Solve for x
   x = 5,807,085,861.53/92,006.48
6. Step 6: Final answer
   x = 63,116.05