Finding the Fourth Proportional to 139,053.30, 191,897.33 and 78,632.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,053.30 : 191,897.33 = 78,632.99 : x
2. Step 2: Convert to fraction form
   139,053.30/191,897.33 = 78,632.99/x
3. Step 3: Cross multiply
   139,053.30x = 191,897.33 × 78,632.99
4. Step 4: Simplify right side
   139,053.30x = 15,089,460,068.01
5. Step 5: Solve for x
   x = 15,089,460,068.01/139,053.30
6. Step 6: Final answer
   x = 108,515.66