Finding the Fourth Proportional to 42,090.79, 58,038.20 and 34,410.09

Step by Step Solution

1. Step 1: Write the proportion equation
   42,090.79 : 58,038.20 = 34,410.09 : x
2. Step 2: Convert to fraction form
   42,090.79/58,038.20 = 34,410.09/x
3. Step 3: Cross multiply
   42,090.79x = 58,038.20 × 34,410.09
4. Step 4: Simplify right side
   42,090.79x = 1,997,099,600.06
5. Step 5: Solve for x
   x = 1,997,099,600.06/42,090.79
6. Step 6: Final answer
   x = 47,447.43