Finding the Fourth Proportional to 101,433.22, 139,975.32 and 56,113.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,433.22 : 139,975.32 = 56,113.72 : x
2. Step 2: Convert to fraction form
   101,433.22/139,975.32 = 56,113.72/x
3. Step 3: Cross multiply
   101,433.22x = 139,975.32 × 56,113.72
4. Step 4: Simplify right side
   101,433.22x = 7,854,535,877.93
5. Step 5: Solve for x
   x = 7,854,535,877.93/101,433.22
6. Step 6: Final answer
   x = 77,435.54