Finding the Fourth Proportional to 76,492.79, 105,559.71 and 42,506.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,492.79 : 105,559.71 = 42,506.81 : x
2. Step 2: Convert to fraction form
   76,492.79/105,559.71 = 42,506.81/x
3. Step 3: Cross multiply
   76,492.79x = 105,559.71 × 42,506.81
4. Step 4: Simplify right side
   76,492.79x = 4,487,006,536.63
5. Step 5: Solve for x
   x = 4,487,006,536.63/76,492.79
6. Step 6: Final answer
   x = 58,659.21