Finding the Fourth Proportional to 76,133.31, 105,061.27 and 42,141.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,133.31 : 105,061.27 = 42,141.86 : x
2. Step 2: Convert to fraction form
   76,133.31/105,061.27 = 42,141.86/x
3. Step 3: Cross multiply
   76,133.31x = 105,061.27 × 42,141.86
4. Step 4: Simplify right side
   76,133.31x = 4,427,477,331.76
5. Step 5: Solve for x
   x = 4,427,477,331.76/76,133.31
6. Step 6: Final answer
   x = 58,154.27