Finding the Fourth Proportional to 103,384.42, 155,074.83 and 56,611.78

Step by Step Solution

1. Step 1: Write the proportion equation
   103,384.42 : 155,074.83 = 56,611.78 : x
2. Step 2: Convert to fraction form
   103,384.42/155,074.83 = 56,611.78/x
3. Step 3: Cross multiply
   103,384.42x = 155,074.83 × 56,611.78
4. Step 4: Simplify right side
   103,384.42x = 8,779,062,159.50
5. Step 5: Solve for x
   x = 8,779,062,159.50/103,384.42
6. Step 6: Final answer
   x = 84,916.68