Finding the Fourth Proportional to 88,138,300.61, 121,502,663.39 and 61,594,242.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,138,300.61 : 121,502,663.39 = 61,594,242.50 : x
2. Step 2: Convert to fraction form
   88,138,300.61/121,502,663.39 = 61,594,242.50/x
3. Step 3: Cross multiply
   88,138,300.61x = 121,502,663.39 × 61,594,242.50
4. Step 4: Simplify right side
   88,138,300.61x = 7,483,864,513,239,532
5. Step 5: Solve for x
   x = 7,483,864,513,239,532/88,138,300.61
6. Step 6: Final answer
   x = 84,910,469.81