Finding the Fourth Proportional to 101,729.03, 140,384.61 and 56,407.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,729.03 : 140,384.61 = 56,407.10 : x
2. Step 2: Convert to fraction form
   101,729.03/140,384.61 = 56,407.10/x
3. Step 3: Cross multiply
   101,729.03x = 140,384.61 × 56,407.10
4. Step 4: Simplify right side
   101,729.03x = 7,918,688,734.73
5. Step 5: Solve for x
   x = 7,918,688,734.73/101,729.03
6. Step 6: Final answer
   x = 77,840.99