Finding the Fourth Proportional to 91,214,411.60, 136,630,846.20 and 42,733,643.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,214,411.60 : 136,630,846.20 = 42,733,643.60 : x
2. Step 2: Convert to fraction form
   91,214,411.60/136,630,846.20 = 42,733,643.60/x
3. Step 3: Cross multiply
   91,214,411.60x = 136,630,846.20 × 42,733,643.60
4. Step 4: Simplify right side
   91,214,411.60x = 5,838,733,886,277,214
5. Step 5: Solve for x
   x = 5,838,733,886,277,214/91,214,411.60
6. Step 6: Final answer
   x = 64,011,089.74