Finding the Fourth Proportional to 101,377.89, 139,899.01 and 56,054.71

Step by Step Solution

1. Step 1: Write the proportion equation
   101,377.89 : 139,899.01 = 56,054.71 : x
2. Step 2: Convert to fraction form
   101,377.89/139,899.01 = 56,054.71/x
3. Step 3: Cross multiply
   101,377.89x = 139,899.01 × 56,054.71
4. Step 4: Simplify right side
   101,377.89x = 7,841,998,260.04
5. Step 5: Solve for x
   x = 7,841,998,260.04/101,377.89
6. Step 6: Final answer
   x = 77,354.13