Finding the Fourth Proportional to 92,643.63, 139,151.40 and 55,276.62

Step by Step Solution

1. Step 1: Write the proportion equation
   92,643.63 : 139,151.40 = 55,276.62 : x
2. Step 2: Convert to fraction form
   92,643.63/139,151.40 = 55,276.62/x
3. Step 3: Cross multiply
   92,643.63x = 139,151.40 × 55,276.62
4. Step 4: Simplify right side
   92,643.63x = 7,691,819,060.27
5. Step 5: Solve for x
   x = 7,691,819,060.27/92,643.63
6. Step 6: Final answer
   x = 83,025.88