Finding the Fourth Proportional to 92,783.91, 139,068.29 and 42,758.92

Step by Step Solution

1. Step 1: Write the proportion equation
   92,783.91 : 139,068.29 = 42,758.92 : x
2. Step 2: Convert to fraction form
   92,783.91/139,068.29 = 42,758.92/x
3. Step 3: Cross multiply
   92,783.91x = 139,068.29 × 42,758.92
4. Step 4: Simplify right side
   92,783.91x = 5,946,410,167.38
5. Step 5: Solve for x
   x = 5,946,410,167.38/92,783.91
6. Step 6: Final answer
   x = 64,088.81