Finding the Fourth Proportional to 42,090.78, 58,083.44 and 22,970.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,090.78 : 58,083.44 = 22,970.06 : x
2. Step 2: Convert to fraction form
   42,090.78/58,083.44 = 22,970.06/x
3. Step 3: Cross multiply
   42,090.78x = 58,083.44 × 22,970.06
4. Step 4: Simplify right side
   42,090.78x = 1,334,180,101.81
5. Step 5: Solve for x
   x = 1,334,180,101.81/42,090.78
6. Step 6: Final answer
   x = 31,697.68