Finding the Fourth Proportional to 101,387.42, 139,915.55 and 56,068.46

Step by Step Solution

1. Step 1: Write the proportion equation
   101,387.42 : 139,915.55 = 56,068.46 : x
2. Step 2: Convert to fraction form
   101,387.42/139,915.55 = 56,068.46/x
3. Step 3: Cross multiply
   101,387.42x = 139,915.55 × 56,068.46
4. Step 4: Simplify right side
   101,387.42x = 7,844,848,859.15
5. Step 5: Solve for x
   x = 7,844,848,859.15/101,387.42
6. Step 6: Final answer
   x = 77,374.97