Finding the Fourth Proportional to 105,501.66, 145,592.52 and 57,757.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,501.66 : 145,592.52 = 57,757.98 : x
2. Step 2: Convert to fraction form
   105,501.66/145,592.52 = 57,757.98/x
3. Step 3: Cross multiply
   105,501.66x = 145,592.52 × 57,757.98
4. Step 4: Simplify right side
   105,501.66x = 8,409,129,858.31
5. Step 5: Solve for x
   x = 8,409,129,858.31/105,501.66
6. Step 6: Final answer
   x = 79,706.14