Finding the Fourth Proportional to 102,035.31, 140,801.91 and 56,710.35

Step by Step Solution

1. Step 1: Write the proportion equation
   102,035.31 : 140,801.91 = 56,710.35 : x
2. Step 2: Convert to fraction form
   102,035.31/140,801.91 = 56,710.35/x
3. Step 3: Cross multiply
   102,035.31x = 140,801.91 × 56,710.35
4. Step 4: Simplify right side
   102,035.31x = 7,984,925,596.77
5. Step 5: Solve for x
   x = 7,984,925,596.77/102,035.31
6. Step 6: Final answer
   x = 78,256.49