Finding the Fourth Proportional to 98,947.50, 147,877.98 and 72,349.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,947.50 : 147,877.98 = 72,349.50 : x
2. Step 2: Convert to fraction form
   98,947.50/147,877.98 = 72,349.50/x
3. Step 3: Cross multiply
   98,947.50x = 147,877.98 × 72,349.50
4. Step 4: Simplify right side
   98,947.50x = 10,698,897,914.01
5. Step 5: Solve for x
   x = 10,698,897,914.01/98,947.50
6. Step 6: Final answer
   x = 108,127.02