Finding the Fourth Proportional to 113,488,077.25, 156,613,721.57 and 64,595,505.25

Step by Step Solution

1. Step 1: Write the proportion equation
   113,488,077.25 : 156,613,721.57 = 64,595,505.25 : x
2. Step 2: Convert to fraction form
   113,488,077.25/156,613,721.57 = 64,595,505.25/x
3. Step 3: Cross multiply
   113,488,077.25x = 156,613,721.57 × 64,595,505.25
4. Step 4: Simplify right side
   113,488,077.25x = 10,116,542,473,896,972
5. Step 5: Solve for x
   x = 10,116,542,473,896,972/113,488,077.25
6. Step 6: Final answer
   x = 89,141,896.83