Finding the Fourth Proportional to 101,383.88, 139,897.54 and 56,055.74

Step by Step Solution

1. Step 1: Write the proportion equation
   101,383.88 : 139,897.54 = 56,055.74 : x
2. Step 2: Convert to fraction form
   101,383.88/139,897.54 = 56,055.74/x
3. Step 3: Cross multiply
   101,383.88x = 139,897.54 × 56,055.74
4. Step 4: Simplify right side
   101,383.88x = 7,842,060,128.88
5. Step 5: Solve for x
   x = 7,842,060,128.88/101,383.88
6. Step 6: Final answer
   x = 77,350.17