Finding the Fourth Proportional to 105,632.76, 145,773.20 and 57,887.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,632.76 : 145,773.20 = 57,887.98 : x
2. Step 2: Convert to fraction form
   105,632.76/145,773.20 = 57,887.98/x
3. Step 3: Cross multiply
   105,632.76x = 145,773.20 × 57,887.98
4. Step 4: Simplify right side
   105,632.76x = 8,438,516,086.14
5. Step 5: Solve for x
   x = 8,438,516,086.14/105,632.76
6. Step 6: Final answer
   x = 79,885.41