Finding the Fourth Proportional to 102,074.99, 152,956.55 and 42,878.30

Step by Step Solution

1. Step 1: Write the proportion equation
   102,074.99 : 152,956.55 = 42,878.30 : x
2. Step 2: Convert to fraction form
   102,074.99/152,956.55 = 42,878.30/x
3. Step 3: Cross multiply
   102,074.99x = 152,956.55 × 42,878.30
4. Step 4: Simplify right side
   102,074.99x = 6,558,516,180.28
5. Step 5: Solve for x
   x = 6,558,516,180.28/102,074.99
6. Step 6: Final answer
   x = 64,251.94