Finding the Fourth Proportional to 77,626, 107,123.88 and 42,298

Step by Step Solution

1. Step 1: Write the proportion equation
   77,626 : 107,123.88 = 42,298 : x
2. Step 2: Convert to fraction form
   77,626/107,123.88 = 42,298/x
3. Step 3: Cross multiply
   77,626x = 107,123.88 × 42,298
4. Step 4: Simplify right side
   77,626x = 4,531,125,876.24
5. Step 5: Solve for x
   x = 4,531,125,876.24/77,626
6. Step 6: Final answer
   x = 58,371.24