Finding the Fourth Proportional to 139,050.59, 191,878.00 and 78,612.84

Step by Step Solution

1. Step 1: Write the proportion equation
   139,050.59 : 191,878.00 = 78,612.84 : x
2. Step 2: Convert to fraction form
   139,050.59/191,878.00 = 78,612.84/x
3. Step 3: Cross multiply
   139,050.59x = 191,878.00 × 78,612.84
4. Step 4: Simplify right side
   139,050.59x = 15,084,074,316.99
5. Step 5: Solve for x
   x = 15,084,074,316.99/139,050.59
6. Step 6: Final answer
   x = 108,479.04