Finding the Fourth Proportional to 76,733.60, 105,892.07 and 42,742.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,733.60 : 105,892.07 = 42,742.49 : x
2. Step 2: Convert to fraction form
   76,733.60/105,892.07 = 42,742.49/x
3. Step 3: Cross multiply
   76,733.60x = 105,892.07 × 42,742.49
4. Step 4: Simplify right side
   76,733.60x = 4,526,089,999.88
5. Step 5: Solve for x
   x = 4,526,089,999.88/76,733.60
6. Step 6: Final answer
   x = 58,984.46