Finding the Fourth Proportional to 101,769.32, 140,458.46 and 56,461.89

Step by Step Solution

1. Step 1: Write the proportion equation
   101,769.32 : 140,458.46 = 56,461.89 : x
2. Step 2: Convert to fraction form
   101,769.32/140,458.46 = 56,461.89/x
3. Step 3: Cross multiply
   101,769.32x = 140,458.46 × 56,461.89
4. Step 4: Simplify right side
   101,769.32x = 7,930,549,835.78
5. Step 5: Solve for x
   x = 7,930,549,835.78/101,769.32
6. Step 6: Final answer
   x = 77,926.73