Finding the Fourth Proportional to 112,385.26, 155,091.54 and 64,637.38

Step by Step Solution

1. Step 1: Write the proportion equation
   112,385.26 : 155,091.54 = 64,637.38 : x
2. Step 2: Convert to fraction form
   112,385.26/155,091.54 = 64,637.38/x
3. Step 3: Cross multiply
   112,385.26x = 155,091.54 × 64,637.38
4. Step 4: Simplify right side
   112,385.26x = 10,024,710,805.77
5. Step 5: Solve for x
   x = 10,024,710,805.77/112,385.26
6. Step 6: Final answer
   x = 89,199.52