Finding the Fourth Proportional to 101,012.27, 139,392.72 and 55,070.91

Step by Step Solution

1. Step 1: Write the proportion equation
   101,012.27 : 139,392.72 = 55,070.91 : x
2. Step 2: Convert to fraction form
   101,012.27/139,392.72 = 55,070.91/x
3. Step 3: Cross multiply
   101,012.27x = 139,392.72 × 55,070.91
4. Step 4: Simplify right side
   101,012.27x = 7,676,483,937.78
5. Step 5: Solve for x
   x = 7,676,483,937.78/101,012.27
6. Step 6: Final answer
   x = 75,995.56