Finding the Fourth Proportional to 101,384.22, 139,908.77 and 56,061.21

Step by Step Solution

1. Step 1: Write the proportion equation
   101,384.22 : 139,908.77 = 56,061.21 : x
2. Step 2: Convert to fraction form
   101,384.22/139,908.77 = 56,061.21/x
3. Step 3: Cross multiply
   101,384.22x = 139,908.77 × 56,061.21
4. Step 4: Simplify right side
   101,384.22x = 7,843,454,655.51
5. Step 5: Solve for x
   x = 7,843,454,655.51/101,384.22
6. Step 6: Final answer
   x = 77,363.66