Finding the Fourth Proportional to 139,443,473.63, 209,190,743.67 and 57,517,659.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,443,473.63 : 209,190,743.67 = 57,517,659.02 : x
2. Step 2: Convert to fraction form
   139,443,473.63/209,190,743.67 = 57,517,659.02/x
3. Step 3: Cross multiply
   139,443,473.63x = 209,190,743.67 × 57,517,659.02
4. Step 4: Simplify right side
   139,443,473.63x = 12,032,161,864,551,284
5. Step 5: Solve for x
   x = 12,032,161,864,551,284/139,443,473.63
6. Step 6: Final answer
   x = 86,287,020.48