Finding the Fourth Proportional to 101,380.06, 139,898.84 and 56,055.32

Step by Step Solution

1. Step 1: Write the proportion equation
   101,380.06 : 139,898.84 = 56,055.32 : x
2. Step 2: Convert to fraction form
   101,380.06/139,898.84 = 56,055.32/x
3. Step 3: Cross multiply
   101,380.06x = 139,898.84 × 56,055.32
4. Step 4: Simplify right side
   101,380.06x = 7,842,074,243.83
5. Step 5: Solve for x
   x = 7,842,074,243.83/101,380.06
6. Step 6: Final answer
   x = 77,353.22