Finding the Fourth Proportional to 139,006.83, 191,827.34 and 78,575.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,006.83 : 191,827.34 = 78,575.35 : x
2. Step 2: Convert to fraction form
   139,006.83/191,827.34 = 78,575.35/x
3. Step 3: Cross multiply
   139,006.83x = 191,827.34 × 78,575.35
4. Step 4: Simplify right side
   139,006.83x = 15,072,900,380.07
5. Step 5: Solve for x
   x = 15,072,900,380.07/139,006.83
6. Step 6: Final answer
   x = 108,432.80