Finding the Fourth Proportional to 115,549,152.16, 173,268,639.60 and 42,762,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,549,152.16 : 173,268,639.60 = 42,762,658.72 : x
2. Step 2: Convert to fraction form
   115,549,152.16/173,268,639.60 = 42,762,658.72/x
3. Step 3: Cross multiply
   115,549,152.16x = 173,268,639.60 × 42,762,658.72
4. Step 4: Simplify right side
   115,549,152.16x = 7,409,427,702,093,477
5. Step 5: Solve for x
   x = 7,409,427,702,093,477/115,549,152.16
6. Step 6: Final answer
   x = 64,123,600.77