Finding the Fourth Proportional to 101,763.32, 140,431.28 and 56,433.98

Step by Step Solution

1. Step 1: Write the proportion equation
   101,763.32 : 140,431.28 = 56,433.98 : x
2. Step 2: Convert to fraction form
   101,763.32/140,431.28 = 56,433.98/x
3. Step 3: Cross multiply
   101,763.32x = 140,431.28 × 56,433.98
4. Step 4: Simplify right side
   101,763.32x = 7,925,096,046.89
5. Step 5: Solve for x
   x = 7,925,096,046.89/101,763.32
6. Step 6: Final answer
   x = 77,877.73