Finding the Fourth Proportional to 42,090.47, 58,085.18 and 22,970.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,090.47 : 58,085.18 = 22,970.39 : x
2. Step 2: Convert to fraction form
   42,090.47/58,085.18 = 22,970.39/x
3. Step 3: Cross multiply
   42,090.47x = 58,085.18 × 22,970.39
4. Step 4: Simplify right side
   42,090.47x = 1,334,239,237.82
5. Step 5: Solve for x
   x = 1,334,239,237.82/42,090.47
6. Step 6: Final answer
   x = 31,699.32