Finding the Fourth Proportional to 102,748.55, 154,061.30 and 42,704.62

Step by Step Solution

1. Step 1: Write the proportion equation
   102,748.55 : 154,061.30 = 42,704.62 : x
2. Step 2: Convert to fraction form
   102,748.55/154,061.30 = 42,704.62/x
3. Step 3: Cross multiply
   102,748.55x = 154,061.30 × 42,704.62
4. Step 4: Simplify right side
   102,748.55x = 6,579,128,994.81
5. Step 5: Solve for x
   x = 6,579,128,994.81/102,748.55
6. Step 6: Final answer
   x = 64,031.36