Finding the Fourth Proportional to 103,773.60, 155,658.80 and 70,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,773.60 : 155,658.80 = 70,410.72 : x
2. Step 2: Convert to fraction form
   103,773.60/155,658.80 = 70,410.72/x
3. Step 3: Cross multiply
   103,773.60x = 155,658.80 × 70,410.72
4. Step 4: Simplify right side
   103,773.60x = 10,960,048,182.34
5. Step 5: Solve for x
   x = 10,960,048,182.34/103,773.60
6. Step 6: Final answer
   x = 105,614.99