Finding the Fourth Proportional to 101,459.82, 140,018.69 and 56,137.07

Step by Step Solution

1. Step 1: Write the proportion equation
   101,459.82 : 140,018.69 = 56,137.07 : x
2. Step 2: Convert to fraction form
   101,459.82/140,018.69 = 56,137.07/x
3. Step 3: Cross multiply
   101,459.82x = 140,018.69 × 56,137.07
4. Step 4: Simplify right side
   101,459.82x = 7,860,238,721.15
5. Step 5: Solve for x
   x = 7,860,238,721.15/101,459.82
6. Step 6: Final answer
   x = 77,471.44