Finding the Fourth Proportional to 101,339.72, 139,848.48 and 56,627.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,339.72 : 139,848.48 = 56,627.72 : x
2. Step 2: Convert to fraction form
   101,339.72/139,848.48 = 56,627.72/x
3. Step 3: Cross multiply
   101,339.72x = 139,848.48 × 56,627.72
4. Step 4: Simplify right side
   101,339.72x = 7,919,300,567.87
5. Step 5: Solve for x
   x = 7,919,300,567.87/101,339.72
6. Step 6: Final answer
   x = 78,146.07