Finding the Fourth Proportional to 83,692.51, 115,467.55 and 47,389.01

Step by Step Solution

1. Step 1: Write the proportion equation
   83,692.51 : 115,467.55 = 47,389.01 : x
2. Step 2: Convert to fraction form
   83,692.51/115,467.55 = 47,389.01/x
3. Step 3: Cross multiply
   83,692.51x = 115,467.55 × 47,389.01
4. Step 4: Simplify right side
   83,692.51x = 5,471,892,881.63
5. Step 5: Solve for x
   x = 5,471,892,881.63/83,692.51
6. Step 6: Final answer
   x = 65,380.91