Finding the Fourth Proportional to 117,915,473.12, 162,721,172.72 and 64,270,597.12

Step by Step Solution

1. Step 1: Write the proportion equation
   117,915,473.12 : 162,721,172.72 = 64,270,597.12 : x
2. Step 2: Convert to fraction form
   117,915,473.12/162,721,172.72 = 64,270,597.12/x
3. Step 3: Cross multiply
   117,915,473.12x = 162,721,172.72 × 64,270,597.12
4. Step 4: Simplify right side
   117,915,473.12x = 10,458,186,934,781,054
5. Step 5: Solve for x
   x = 10,458,186,934,781,054/117,915,473.12
6. Step 6: Final answer
   x = 88,692,235.70