Finding the Fourth Proportional to 76,152.16, 105,090.12 and 42,163

Step by Step Solution

1. Step 1: Write the proportion equation
   76,152.16 : 105,090.12 = 42,163 : x
2. Step 2: Convert to fraction form
   76,152.16/105,090.12 = 42,163/x
3. Step 3: Cross multiply
   76,152.16x = 105,090.12 × 42,163
4. Step 4: Simplify right side
   76,152.16x = 4,430,914,729.56
5. Step 5: Solve for x
   x = 4,430,914,729.56/76,152.16
6. Step 6: Final answer
   x = 58,185.02