Finding the Fourth Proportional to 101,897.42, 140,622.83 and 56,575.40

Step by Step Solution

1. Step 1: Write the proportion equation
   101,897.42 : 140,622.83 = 56,575.40 : x
2. Step 2: Convert to fraction form
   101,897.42/140,622.83 = 56,575.40/x
3. Step 3: Cross multiply
   101,897.42x = 140,622.83 × 56,575.40
4. Step 4: Simplify right side
   101,897.42x = 7,955,792,925.06
5. Step 5: Solve for x
   x = 7,955,792,925.06/101,897.42
6. Step 6: Final answer
   x = 78,076.49