Finding the Fourth Proportional to 76,131.37, 105,059.01 and 42,141.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,131.37 : 105,059.01 = 42,141.25 : x
2. Step 2: Convert to fraction form
   76,131.37/105,059.01 = 42,141.25/x
3. Step 3: Cross multiply
   76,131.37x = 105,059.01 × 42,141.25
4. Step 4: Simplify right side
   76,131.37x = 4,427,318,005.16
5. Step 5: Solve for x
   x = 4,427,318,005.16/76,131.37
6. Step 6: Final answer
   x = 58,153.66