Finding the Fourth Proportional to 105,607.32, 145,730.52 and 57,852.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,607.32 : 145,730.52 = 57,852.96 : x
2. Step 2: Convert to fraction form
   105,607.32/145,730.52 = 57,852.96/x
3. Step 3: Cross multiply
   105,607.32x = 145,730.52 × 57,852.96
4. Step 4: Simplify right side
   105,607.32x = 8,430,941,944.34
5. Step 5: Solve for x
   x = 8,430,941,944.34/105,607.32
6. Step 6: Final answer
   x = 79,832.93