Finding the Fourth Proportional to 99,510, 137,323.80 and 54,798

Step by Step Solution

1. Step 1: Write the proportion equation
   99,510 : 137,323.80 = 54,798 : x
2. Step 2: Convert to fraction form
   99,510/137,323.80 = 54,798/x
3. Step 3: Cross multiply
   99,510x = 137,323.80 × 54,798
4. Step 4: Simplify right side
   99,510x = 7,525,069,592.40
5. Step 5: Solve for x
   x = 7,525,069,592.40/99,510
6. Step 6: Final answer
   x = 75,621.24