Finding the Fourth Proportional to 101,742.51, 140,411.85 and 56,424.83

Step by Step Solution

1. Step 1: Write the proportion equation
   101,742.51 : 140,411.85 = 56,424.83 : x
2. Step 2: Convert to fraction form
   101,742.51/140,411.85 = 56,424.83/x
3. Step 3: Cross multiply
   101,742.51x = 140,411.85 × 56,424.83
4. Step 4: Simplify right side
   101,742.51x = 7,922,714,064.18
5. Step 5: Solve for x
   x = 7,922,714,064.18/101,742.51
6. Step 6: Final answer
   x = 77,870.24