Finding the Fourth Proportional to 76,111.02, 105,038.46 and 42,120.93

Step by Step Solution

1. Step 1: Write the proportion equation
   76,111.02 : 105,038.46 = 42,120.93 : x
2. Step 2: Convert to fraction form
   76,111.02/105,038.46 = 42,120.93/x
3. Step 3: Cross multiply
   76,111.02x = 105,038.46 × 42,120.93
4. Step 4: Simplify right side
   76,111.02x = 4,424,317,620.97
5. Step 5: Solve for x
   x = 4,424,317,620.97/76,111.02
6. Step 6: Final answer
   x = 58,129.79