Finding the Fourth Proportional to 102,946.49, 142,068.56 and 57,623.34

Step by Step Solution

1. Step 1: Write the proportion equation
   102,946.49 : 142,068.56 = 57,623.34 : x
2. Step 2: Convert to fraction form
   102,946.49/142,068.56 = 57,623.34/x
3. Step 3: Cross multiply
   102,946.49x = 142,068.56 × 57,623.34
4. Step 4: Simplify right side
   102,946.49x = 8,186,464,648.07
5. Step 5: Solve for x
   x = 8,186,464,648.07/102,946.49
6. Step 6: Final answer
   x = 79,521.56