Finding the Fourth Proportional to 101,334.72, 139,841.64 and 56,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,334.72 : 139,841.64 = 56,622.72 : x
2. Step 2: Convert to fraction form
   101,334.72/139,841.64 = 56,622.72/x
3. Step 3: Cross multiply
   101,334.72x = 139,841.64 × 56,622.72
4. Step 4: Simplify right side
   101,334.72x = 7,918,214,026.06
5. Step 5: Solve for x
   x = 7,918,214,026.06/101,334.72
6. Step 6: Final answer
   x = 78,139.20