Finding the Fourth Proportional to 70,611.56, 97,444.72 and 38,780.45

Step by Step Solution

1. Step 1: Write the proportion equation
   70,611.56 : 97,444.72 = 38,780.45 : x
2. Step 2: Convert to fraction form
   70,611.56/97,444.72 = 38,780.45/x
3. Step 3: Cross multiply
   70,611.56x = 97,444.72 × 38,780.45
4. Step 4: Simplify right side
   70,611.56x = 3,778,950,566.52
5. Step 5: Solve for x
   x = 3,778,950,566.52/70,611.56
6. Step 6: Final answer
   x = 53,517.45