Finding the Fourth Proportional to 99,621,287.06, 137,480,794.71 and 57,802,194.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,621,287.06 : 137,480,794.71 = 57,802,194.50 : x
2. Step 2: Convert to fraction form
   99,621,287.06/137,480,794.71 = 57,802,194.50/x
3. Step 3: Cross multiply
   99,621,287.06x = 137,480,794.71 × 57,802,194.50
4. Step 4: Simplify right side
   99,621,287.06x = 7,946,691,635,841,992
5. Step 5: Solve for x
   x = 7,946,691,635,841,992/99,621,287.06
6. Step 6: Final answer
   x = 79,769,011.93