Finding the Fourth Proportional to 76,164.06, 105,109.68 and 42,172.54

Step by Step Solution

1. Step 1: Write the proportion equation
   76,164.06 : 105,109.68 = 42,172.54 : x
2. Step 2: Convert to fraction form
   76,164.06/105,109.68 = 42,172.54/x
3. Step 3: Cross multiply
   76,164.06x = 105,109.68 × 42,172.54
4. Step 4: Simplify right side
   76,164.06x = 4,432,742,184.19
5. Step 5: Solve for x
   x = 4,432,742,184.19/76,164.06
6. Step 6: Final answer
   x = 58,199.92