Finding the Fourth Proportional to 85,929.22, 128,944.86 and 46,485.46

Step by Step Solution

1. Step 1: Write the proportion equation
   85,929.22 : 128,944.86 = 46,485.46 : x
2. Step 2: Convert to fraction form
   85,929.22/128,944.86 = 46,485.46/x
3. Step 3: Cross multiply
   85,929.22x = 128,944.86 × 46,485.46
4. Step 4: Simplify right side
   85,929.22x = 5,994,061,131.74
5. Step 5: Solve for x
   x = 5,994,061,131.74/85,929.22
6. Step 6: Final answer
   x = 69,755.80